-/* Target-vector operations for controlling win32 child processes, for GDB.
+/* Target-vector operations for controlling windows child processes, for GDB.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2014 Free Software Foundation, Inc.
Contributed by Cygnus Solutions, A Red Hat Company.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without eve nthe implied warranty of
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Originally by Steve Chamberlain, sac@cygnus.com */
-/* We assume we're being built with and will be used for cygwin. */
-
#include "defs.h"
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include <stdlib.h>
#include <windows.h>
#include <imagehlp.h>
+#include <psapi.h>
+#ifdef __CYGWIN__
+#include <wchar.h>
#include <sys/cygwin.h>
+#include <cygwin/version.h>
+#endif
#include "buildsym.h"
+#include "filenames.h"
#include "symfile.h"
#include "objfiles.h"
-#include "gdb_string.h"
+#include "gdb_bfd.h"
+#include "gdb_obstack.h"
+#include <string.h>
#include "gdbthread.h"
#include "gdbcmd.h"
-#include <sys/param.h>
#include <unistd.h>
#include "exec.h"
#include "solist.h"
#include "solib.h"
+#include "xml-support.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
-static struct target_ops win32_ops;
-static struct target_so_ops win32_so_ops;
+#include "windows-tdep.h"
+#include "windows-nat.h"
+#include "i386-nat.h"
+#include "complaints.h"
+
+#define AdjustTokenPrivileges dyn_AdjustTokenPrivileges
+#define DebugActiveProcessStop dyn_DebugActiveProcessStop
+#define DebugBreakProcess dyn_DebugBreakProcess
+#define DebugSetProcessKillOnExit dyn_DebugSetProcessKillOnExit
+#define EnumProcessModules dyn_EnumProcessModules
+#define GetModuleInformation dyn_GetModuleInformation
+#define LookupPrivilegeValueA dyn_LookupPrivilegeValueA
+#define OpenProcessToken dyn_OpenProcessToken
+#define GetConsoleFontSize dyn_GetConsoleFontSize
+#define GetCurrentConsoleFont dyn_GetCurrentConsoleFont
+
+static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
+ DWORD, PTOKEN_PRIVILEGES, PDWORD);
+static BOOL WINAPI (*DebugActiveProcessStop) (DWORD);
+static BOOL WINAPI (*DebugBreakProcess) (HANDLE);
+static BOOL WINAPI (*DebugSetProcessKillOnExit) (BOOL);
+static BOOL WINAPI (*EnumProcessModules) (HANDLE, HMODULE *, DWORD,
+ LPDWORD);
+static BOOL WINAPI (*GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO,
+ DWORD);
+static BOOL WINAPI (*LookupPrivilegeValueA)(LPCSTR, LPCSTR, PLUID);
+static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
+static BOOL WINAPI (*GetCurrentConsoleFont) (HANDLE, BOOL,
+ CONSOLE_FONT_INFO *);
+static COORD WINAPI (*GetConsoleFontSize) (HANDLE, DWORD);
+
+static struct target_ops windows_ops;
+
+#undef STARTUPINFO
+#undef CreateProcess
+#undef GetModuleFileNameEx
+
+#ifndef __CYGWIN__
+# define __PMAX (MAX_PATH + 1)
+ static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE, LPSTR, DWORD);
+# define STARTUPINFO STARTUPINFOA
+# define CreateProcess CreateProcessA
+# define GetModuleFileNameEx_name "GetModuleFileNameExA"
+# define bad_GetModuleFileNameEx bad_GetModuleFileNameExA
+#else
+# define __PMAX PATH_MAX
+/* The starting and ending address of the cygwin1.dll text segment. */
+ static CORE_ADDR cygwin_load_start;
+ static CORE_ADDR cygwin_load_end;
+# define __USEWIDE
+ typedef wchar_t cygwin_buf_t;
+ static DWORD WINAPI (*GetModuleFileNameEx) (HANDLE, HMODULE,
+ LPWSTR, DWORD);
+# define STARTUPINFO STARTUPINFOW
+# define CreateProcess CreateProcessW
+# define GetModuleFileNameEx_name "GetModuleFileNameExW"
+# define bad_GetModuleFileNameEx bad_GetModuleFileNameExW
+#endif
+
+static int have_saved_context; /* True if we've saved context from a
+ cygwin signal. */
+static CONTEXT saved_context; /* Containes the saved context from a
+ cygwin signal. */
/* If we're not using the old Cygwin header file set, define the
following which never should have been in the generic Win32 API
- headers in the first place since they were our own invention... */
+ headers in the first place since they were our own invention... */
#ifndef _GNU_H_WINDOWS_H
enum
{
CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
};
#endif
-#include <sys/procfs.h>
-#include <psapi.h>
+
+#ifndef CONTEXT_EXTENDED_REGISTERS
+/* This macro is only defined on ia32. It only makes sense on this target,
+ so define it as zero if not already defined. */
+#define CONTEXT_EXTENDED_REGISTERS 0
+#endif
#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
| CONTEXT_EXTENDED_REGISTERS
-static unsigned dr[8];
+static uintptr_t dr[8];
static int debug_registers_changed;
static int debug_registers_used;
+static int windows_initialization_done;
+#define DR6_CLEAR_VALUE 0xffff0ff0
+
/* The string sent by cygwin when it processes a signal.
- FIXME: This should be in a cygwin include file. */
-#define CYGWIN_SIGNAL_STRING "cygwin: signal"
+ FIXME: This should be in a cygwin include file. */
+#ifndef _CYGWIN_SIGNAL_STRING
+#define _CYGWIN_SIGNAL_STRING "cYgSiGw00f"
+#endif
#define CHECK(x) check (x, __FILE__,__LINE__)
#define DEBUG_EXEC(x) if (debug_exec) printf_unfiltered x
#define DEBUG_MEM(x) if (debug_memory) printf_unfiltered x
#define DEBUG_EXCEPT(x) if (debug_exceptions) printf_unfiltered x
-static void win32_stop (void);
-static int win32_win32_thread_alive (ptid_t);
-static void win32_kill_inferior (void);
+static void windows_stop (ptid_t);
+static int windows_thread_alive (struct target_ops *, ptid_t);
+static void windows_kill_inferior (struct target_ops *);
-static enum target_signal last_sig = TARGET_SIGNAL_0;
-/* Set if a signal was received from the debugged process */
+static void cygwin_set_dr (int i, CORE_ADDR addr);
+static void cygwin_set_dr7 (unsigned long val);
+static CORE_ADDR cygwin_get_dr (int i);
+static unsigned long cygwin_get_dr6 (void);
+static unsigned long cygwin_get_dr7 (void);
+
+static enum gdb_signal last_sig = GDB_SIGNAL_0;
+/* Set if a signal was received from the debugged process. */
/* Thread information structure used to track information that is
- not available in gdb's thread structure. */
+ not available in gdb's thread structure. */
typedef struct thread_info_struct
{
struct thread_info_struct *next;
DWORD id;
HANDLE h;
+ CORE_ADDR thread_local_base;
char *name;
- int suspend_count;
+ int suspended;
int reload_context;
CONTEXT context;
STACKFRAME sf;
static thread_info thread_head;
-/* The process and thread handles for the above context. */
+/* The process and thread handles for the above context. */
static DEBUG_EVENT current_event; /* The current debug event from
WaitForDebugEvent */
static thread_info *current_thread; /* Info on currently selected thread */
static DWORD main_thread_id; /* Thread ID of the main thread */
-/* Counts of things. */
+/* Counts of things. */
static int exception_count = 0;
static int event_count = 0;
static int saw_create;
+static int open_process_used = 0;
-/* User options. */
+/* User options. */
static int new_console = 0;
+#ifdef __CYGWIN__
+static int cygwin_exceptions = 0;
+#endif
static int new_group = 1;
static int debug_exec = 0; /* show execution */
static int debug_events = 0; /* show events from kernel */
static int debug_exceptions = 0; /* show target exceptions */
static int useshell = 0; /* use shell for subprocesses */
-/* This vector maps GDB's idea of a register's number into an address
- in the win32 exception context vector.
+/* This vector maps GDB's idea of a register's number into an offset
+ in the windows exception context vector.
It also contains the bit mask needed to load the register in question.
+ The contents of this table can only be computed by the units
+ that provide CPU-specific support for Windows native debugging.
+ These units should set the table by calling
+ windows_set_context_register_offsets.
+
One day we could read a reg, we could inspect the context we
already have loaded, if it doesn't have the bit set that we need,
we read that set of registers in using GetThreadContext. If the
- context already contains what we need, we just unpack it. Then to
+ context already contains what we need, we just unpack it. Then to
write a register, first we have to ensure that the context contains
the other regs of the group, and then we copy the info in and set
- out bit. */
-
-#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
-static const int mappings[] =
-{
- context_offset (Eax),
- context_offset (Ecx),
- context_offset (Edx),
- context_offset (Ebx),
- context_offset (Esp),
- context_offset (Ebp),
- context_offset (Esi),
- context_offset (Edi),
- context_offset (Eip),
- context_offset (EFlags),
- context_offset (SegCs),
- context_offset (SegSs),
- context_offset (SegDs),
- context_offset (SegEs),
- context_offset (SegFs),
- context_offset (SegGs),
- context_offset (FloatSave.RegisterArea[0 * 10]),
- context_offset (FloatSave.RegisterArea[1 * 10]),
- context_offset (FloatSave.RegisterArea[2 * 10]),
- context_offset (FloatSave.RegisterArea[3 * 10]),
- context_offset (FloatSave.RegisterArea[4 * 10]),
- context_offset (FloatSave.RegisterArea[5 * 10]),
- context_offset (FloatSave.RegisterArea[6 * 10]),
- context_offset (FloatSave.RegisterArea[7 * 10]),
- context_offset (FloatSave.ControlWord),
- context_offset (FloatSave.StatusWord),
- context_offset (FloatSave.TagWord),
- context_offset (FloatSave.ErrorSelector),
- context_offset (FloatSave.ErrorOffset),
- context_offset (FloatSave.DataSelector),
- context_offset (FloatSave.DataOffset),
- context_offset (FloatSave.ErrorSelector)
- /* XMM0-7 */ ,
- context_offset (ExtendedRegisters[10*16]),
- context_offset (ExtendedRegisters[11*16]),
- context_offset (ExtendedRegisters[12*16]),
- context_offset (ExtendedRegisters[13*16]),
- context_offset (ExtendedRegisters[14*16]),
- context_offset (ExtendedRegisters[15*16]),
- context_offset (ExtendedRegisters[16*16]),
- context_offset (ExtendedRegisters[17*16]),
- /* MXCSR */
- context_offset (ExtendedRegisters[24])
-};
+ out bit. */
-#undef context_offset
+static const int *mappings;
+
+/* The function to use in order to determine whether a register is
+ a segment register or not. */
+static segment_register_p_ftype *segment_register_p;
/* This vector maps the target's idea of an exception (extracted
- from the DEBUG_EVENT structure) to GDB's idea. */
+ from the DEBUG_EVENT structure) to GDB's idea. */
struct xlate_exception
{
int them;
- enum target_signal us;
+ enum gdb_signal us;
};
static const struct xlate_exception
xlate[] =
{
- {EXCEPTION_ACCESS_VIOLATION, TARGET_SIGNAL_SEGV},
- {STATUS_STACK_OVERFLOW, TARGET_SIGNAL_SEGV},
- {EXCEPTION_BREAKPOINT, TARGET_SIGNAL_TRAP},
- {DBG_CONTROL_C, TARGET_SIGNAL_INT},
- {EXCEPTION_SINGLE_STEP, TARGET_SIGNAL_TRAP},
- {STATUS_FLOAT_DIVIDE_BY_ZERO, TARGET_SIGNAL_FPE},
+ {EXCEPTION_ACCESS_VIOLATION, GDB_SIGNAL_SEGV},
+ {STATUS_STACK_OVERFLOW, GDB_SIGNAL_SEGV},
+ {EXCEPTION_BREAKPOINT, GDB_SIGNAL_TRAP},
+ {DBG_CONTROL_C, GDB_SIGNAL_INT},
+ {EXCEPTION_SINGLE_STEP, GDB_SIGNAL_TRAP},
+ {STATUS_FLOAT_DIVIDE_BY_ZERO, GDB_SIGNAL_FPE},
{-1, -1}};
+/* Set the MAPPINGS static global to OFFSETS.
+ See the description of MAPPINGS for more details. */
+
+void
+windows_set_context_register_offsets (const int *offsets)
+{
+ mappings = offsets;
+}
+
+/* See windows-nat.h. */
+
+void
+windows_set_segment_register_p (segment_register_p_ftype *fun)
+{
+ segment_register_p = fun;
+}
+
static void
check (BOOL ok, const char *file, int line)
{
if (!ok)
- printf_filtered ("error return %s:%d was %lu\n", file, line,
- GetLastError ());
+ printf_filtered ("error return %s:%d was %u\n", file, line,
+ (unsigned) GetLastError ());
}
-/* Find a thread record given a thread id.
- If get_context then also retrieve the context for this
- thread. */
+/* Find a thread record given a thread id. If GET_CONTEXT is not 0,
+ then also retrieve the context for this thread. If GET_CONTEXT is
+ negative, then don't suspend the thread. */
static thread_info *
thread_rec (DWORD id, int get_context)
{
for (th = &thread_head; (th = th->next) != NULL;)
if (th->id == id)
{
- if (!th->suspend_count && get_context)
+ if (!th->suspended && get_context)
{
if (get_context > 0 && id != current_event.dwThreadId)
- th->suspend_count = SuspendThread (th->h) + 1;
+ {
+ if (SuspendThread (th->h) == (DWORD) -1)
+ {
+ DWORD err = GetLastError ();
+
+ warning (_("SuspendThread (tid=0x%x) failed."
+ " (winerr %u)"),
+ (unsigned) id, (unsigned) err);
+ return NULL;
+ }
+ th->suspended = 1;
+ }
else if (get_context < 0)
- th->suspend_count = -1;
+ th->suspended = -1;
th->reload_context = 1;
}
return th;
return NULL;
}
-/* Add a thread to the thread list */
+/* Add a thread to the thread list. */
static thread_info *
-win32_add_thread (DWORD id, HANDLE h)
+windows_add_thread (ptid_t ptid, HANDLE h, void *tlb)
{
thread_info *th;
+ DWORD id;
+
+ gdb_assert (ptid_get_tid (ptid) != 0);
+
+ id = ptid_get_tid (ptid);
if ((th = thread_rec (id, FALSE)))
return th;
- th = (thread_info *) xmalloc (sizeof (*th));
- memset (th, 0, sizeof (*th));
+ th = XCNEW (thread_info);
th->id = id;
th->h = h;
+ th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb;
th->next = thread_head.next;
thread_head.next = th;
- add_thread (pid_to_ptid (id));
- /* Set the debug registers for the new thread in they are used. */
+ add_thread (ptid);
+ /* Set the debug registers for the new thread if they are used. */
if (debug_registers_used)
{
/* Only change the value of the debug registers. */
th->context.Dr1 = dr[1];
th->context.Dr2 = dr[2];
th->context.Dr3 = dr[3];
- /* th->context.Dr6 = dr[6];
- FIXME: should we set dr6 also ?? */
+ th->context.Dr6 = DR6_CLEAR_VALUE;
th->context.Dr7 = dr[7];
CHECK (SetThreadContext (th->h, &th->context));
th->context.ContextFlags = 0;
}
/* Clear out any old thread list and reintialize it to a
- pristine state. */
+ pristine state. */
static void
-win32_init_thread_list (void)
+windows_init_thread_list (void)
{
thread_info *th = &thread_head;
- DEBUG_EVENTS (("gdb: win32_init_thread_list\n"));
+ DEBUG_EVENTS (("gdb: windows_init_thread_list\n"));
init_thread_list ();
while (th->next != NULL)
{
thread_info *here = th->next;
th->next = here->next;
- (void) CloseHandle (here->h);
xfree (here);
}
thread_head.next = NULL;
}
-/* Delete a thread from the list of threads */
+/* Delete a thread from the list of threads. */
static void
-win32_delete_thread (DWORD id)
+windows_delete_thread (ptid_t ptid, DWORD exit_code)
{
thread_info *th;
+ DWORD id;
+
+ gdb_assert (ptid_get_tid (ptid) != 0);
+
+ id = ptid_get_tid (ptid);
if (info_verbose)
- printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (pid_to_ptid (id)));
- delete_thread (pid_to_ptid (id));
+ printf_unfiltered ("[Deleting %s]\n", target_pid_to_str (ptid));
+ else if (print_thread_events && id != main_thread_id)
+ printf_unfiltered (_("[%s exited with code %u]\n"),
+ target_pid_to_str (ptid), (unsigned) exit_code);
+ delete_thread (ptid);
for (th = &thread_head;
th->next != NULL && th->next->id != id;
{
thread_info *here = th->next;
th->next = here->next;
- CloseHandle (here->h);
xfree (here);
}
}
static void
-do_win32_fetch_inferior_registers (int r)
+do_windows_fetch_inferior_registers (struct regcache *regcache, int r)
{
char *context_offset = ((char *) ¤t_thread->context) + mappings[r];
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
long l;
if (!current_thread)
return; /* Windows sometimes uses a non-existent thread id in its
- events */
+ events. */
if (current_thread->reload_context)
{
- thread_info *th = current_thread;
- th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
- GetThreadContext (th->h, &th->context);
- /* Copy dr values from that thread. */
- dr[0] = th->context.Dr0;
- dr[1] = th->context.Dr1;
- dr[2] = th->context.Dr2;
- dr[3] = th->context.Dr3;
- dr[6] = th->context.Dr6;
- dr[7] = th->context.Dr7;
+#ifdef __COPY_CONTEXT_SIZE
+ if (have_saved_context)
+ {
+ /* Lie about where the program actually is stopped since
+ cygwin has informed us that we should consider the signal
+ to have occurred at another location which is stored in
+ "saved_context. */
+ memcpy (¤t_thread->context, &saved_context,
+ __COPY_CONTEXT_SIZE);
+ have_saved_context = 0;
+ }
+ else
+#endif
+ {
+ thread_info *th = current_thread;
+ th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
+ GetThreadContext (th->h, &th->context);
+ /* Copy dr values from that thread.
+ But only if there were not modified since last stop.
+ PR gdb/2388 */
+ if (!debug_registers_changed)
+ {
+ dr[0] = th->context.Dr0;
+ dr[1] = th->context.Dr1;
+ dr[2] = th->context.Dr2;
+ dr[3] = th->context.Dr3;
+ dr[6] = th->context.Dr6;
+ dr[7] = th->context.Dr7;
+ }
+ }
current_thread->reload_context = 0;
}
-#define I387_ST0_REGNUM I386_ST0_REGNUM
-
- if (r == I387_FISEG_REGNUM)
+ if (r == I387_FISEG_REGNUM (tdep))
{
l = *((long *) context_offset) & 0xffff;
- regcache_raw_supply (current_regcache, r, (char *) &l);
+ regcache_raw_supply (regcache, r, (char *) &l);
}
- else if (r == I387_FOP_REGNUM)
+ else if (r == I387_FOP_REGNUM (tdep))
{
l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
- regcache_raw_supply (current_regcache, r, (char *) &l);
+ regcache_raw_supply (regcache, r, (char *) &l);
+ }
+ else if (segment_register_p (r))
+ {
+ /* GDB treats segment registers as 32bit registers, but they are
+ in fact only 16 bits long. Make sure we do not read extra
+ bits from our source buffer. */
+ l = *((long *) context_offset) & 0xffff;
+ regcache_raw_supply (regcache, r, (char *) &l);
}
else if (r >= 0)
- regcache_raw_supply (current_regcache, r, context_offset);
+ regcache_raw_supply (regcache, r, context_offset);
else
{
- for (r = 0; r < NUM_REGS; r++)
- do_win32_fetch_inferior_registers (r);
+ for (r = 0; r < gdbarch_num_regs (gdbarch); r++)
+ do_windows_fetch_inferior_registers (regcache, r);
}
-
-#undef I387_ST0_REGNUM
}
static void
-win32_fetch_inferior_registers (int r)
+windows_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int r)
{
- current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
/* Check if current_thread exists. Windows sometimes uses a non-existent
- thread id in its events */
+ thread id in its events. */
if (current_thread)
- do_win32_fetch_inferior_registers (r);
+ do_windows_fetch_inferior_registers (regcache, r);
}
static void
-do_win32_store_inferior_registers (int r)
+do_windows_store_inferior_registers (const struct regcache *regcache, int r)
{
if (!current_thread)
- /* Windows sometimes uses a non-existent thread id in its events */;
+ /* Windows sometimes uses a non-existent thread id in its events. */;
else if (r >= 0)
- regcache_raw_collect (current_regcache, r,
+ regcache_raw_collect (regcache, r,
((char *) ¤t_thread->context) + mappings[r]);
else
{
- for (r = 0; r < NUM_REGS; r++)
- do_win32_store_inferior_registers (r);
+ for (r = 0; r < gdbarch_num_regs (get_regcache_arch (regcache)); r++)
+ do_windows_store_inferior_registers (regcache, r);
}
}
-/* Store a new register value into the current thread context */
+/* Store a new register value into the current thread context. */
static void
-win32_store_inferior_registers (int r)
+windows_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int r)
{
- current_thread = thread_rec (PIDGET (inferior_ptid), TRUE);
+ current_thread = thread_rec (ptid_get_tid (inferior_ptid), TRUE);
/* Check if current_thread exists. Windows sometimes uses a non-existent
- thread id in its events */
+ thread id in its events. */
if (current_thread)
- do_win32_store_inferior_registers (r);
+ do_windows_store_inferior_registers (regcache, r);
}
-static int psapi_loaded = 0;
-static HMODULE psapi_module_handle = NULL;
-static BOOL WINAPI (*psapi_EnumProcessModules) (HANDLE, HMODULE *, DWORD, LPDWORD) = NULL;
-static BOOL WINAPI (*psapi_GetModuleInformation) (HANDLE, HMODULE, LPMODULEINFO, DWORD) = NULL;
-static DWORD WINAPI (*psapi_GetModuleFileNameExA) (HANDLE, HMODULE, LPSTR, DWORD) = NULL;
-
+/* Get the name of a given module at given base address. If base_address
+ is zero return the first loaded module (which is always the name of the
+ executable). */
static int
-psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret)
+get_module_name (LPVOID base_address, char *dll_name_ret)
{
DWORD len;
MODULEINFO mi;
int i;
HMODULE dh_buf[1];
- HMODULE *DllHandle = dh_buf;
+ HMODULE *DllHandle = dh_buf; /* Set to temporary storage for
+ initial query. */
DWORD cbNeeded;
- BOOL ok;
-
- if (!psapi_loaded ||
- psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
- {
- if (psapi_loaded)
- goto failed;
- psapi_loaded = 1;
- psapi_module_handle = LoadLibrary ("psapi.dll");
- if (!psapi_module_handle)
- {
- /* printf_unfiltered ("error loading psapi.dll: %u", GetLastError ()); */
- goto failed;
- }
- psapi_EnumProcessModules = GetProcAddress (psapi_module_handle, "EnumProcessModules");
- psapi_GetModuleInformation = GetProcAddress (psapi_module_handle, "GetModuleInformation");
- psapi_GetModuleFileNameExA = (void *) GetProcAddress (psapi_module_handle,
- "GetModuleFileNameExA");
- if (psapi_EnumProcessModules == NULL ||
- psapi_GetModuleInformation == NULL ||
- psapi_GetModuleFileNameExA == NULL)
- goto failed;
- }
+#ifdef __CYGWIN__
+ cygwin_buf_t pathbuf[__PMAX]; /* Temporary storage prior to converting to
+ posix form. __PMAX is always enough
+ as long as SO_NAME_MAX_PATH_SIZE is defined
+ as 512. */
+#endif
cbNeeded = 0;
- ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- sizeof (HMODULE),
- &cbNeeded);
-
- if (!ok || !cbNeeded)
+ /* Find size of buffer needed to handle list of modules loaded in
+ inferior. */
+ if (!EnumProcessModules (current_process_handle, DllHandle,
+ sizeof (HMODULE), &cbNeeded) || !cbNeeded)
goto failed;
+ /* Allocate correct amount of space for module list. */
DllHandle = (HMODULE *) alloca (cbNeeded);
if (!DllHandle)
goto failed;
- ok = (*psapi_EnumProcessModules) (current_process_handle,
- DllHandle,
- cbNeeded,
- &cbNeeded);
- if (!ok)
+ /* Get the list of modules. */
+ if (!EnumProcessModules (current_process_handle, DllHandle, cbNeeded,
+ &cbNeeded))
goto failed;
for (i = 0; i < (int) (cbNeeded / sizeof (HMODULE)); i++)
{
- if (!(*psapi_GetModuleInformation) (current_process_handle,
- DllHandle[i],
- &mi,
- sizeof (mi)))
+ /* Get information on this module. */
+ if (!GetModuleInformation (current_process_handle, DllHandle[i],
+ &mi, sizeof (mi)))
error (_("Can't get module info"));
- len = (*psapi_GetModuleFileNameExA) (current_process_handle,
- DllHandle[i],
- dll_name_ret,
- MAX_PATH);
- if (len == 0)
- error (_("Error getting dll name: %u."), (unsigned) GetLastError ());
-
- if ((DWORD) (mi.lpBaseOfDll) == BaseAddress)
- return 1;
+ if (!base_address || mi.lpBaseOfDll == base_address)
+ {
+ /* Try to find the name of the given module. */
+#ifdef __CYGWIN__
+ /* Cygwin prefers that the path be in /x/y/z format. */
+ len = GetModuleFileNameEx (current_process_handle,
+ DllHandle[i], pathbuf, __PMAX);
+ if (len == 0)
+ error (_("Error getting dll name: %u."),
+ (unsigned) GetLastError ());
+ if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, pathbuf, dll_name_ret,
+ __PMAX) < 0)
+ error (_("Error converting dll name to POSIX: %d."), errno);
+#else
+ len = GetModuleFileNameEx (current_process_handle,
+ DllHandle[i], dll_name_ret, __PMAX);
+ if (len == 0)
+ error (_("Error getting dll name: %u."),
+ (unsigned) GetLastError ());
+#endif
+ return 1; /* success */
+ }
}
failed:
dll_name_ret[0] = '\0';
- return 0;
+ return 0; /* failure */
}
/* Encapsulate the information required in a call to
- symbol_file_add_args */
+ symbol_file_add_args. */
struct safe_symbol_file_add_args
{
char *name;
struct objfile *ret;
};
-/* Maintain a linked list of "so" information. */
+/* Maintain a linked list of "so" information. */
struct lm_info
{
- DWORD load_addr;
+ LPVOID load_addr;
};
static struct so_list solib_start, *solib_end;
/* Call symbol_file_add with stderr redirected. We don't care if there
- are errors. */
+ are errors. */
static int
safe_symbol_file_add_stub (void *argv)
{
#define p ((struct safe_symbol_file_add_args *) argv)
- struct so_list *so = &solib_start;
-
- p->ret = symbol_file_add (p->name, p->from_tty, p->addrs, p->mainline, p->flags);
+ const int add_flags = ((p->from_tty ? SYMFILE_VERBOSE : 0)
+ | (p->mainline ? SYMFILE_MAINLINE : 0));
+ p->ret = symbol_file_add (p->name, add_flags, p->addrs, p->flags);
return !!p->ret;
#undef p
}
-/* Restore gdb's stderr after calling symbol_file_add */
+/* Restore gdb's stderr after calling symbol_file_add. */
static void
safe_symbol_file_add_cleanup (void *p)
{
#undef sp
}
-/* symbol_file_add wrapper that prevents errors from being displayed. */
+/* symbol_file_add wrapper that prevents errors from being displayed. */
static struct objfile *
safe_symbol_file_add (char *name, int from_tty,
struct section_addr_info *addrs,
return p.ret;
}
-/* Get the loaded address of all sections, given that .text was loaded
- at text_load. Assumes that all sections are subject to the same
- relocation offset. Returns NULL if problems occur or if the
- sections were not relocated. */
-
-static struct section_addr_info *
-get_relocated_section_addrs (bfd *abfd, CORE_ADDR text_load)
-{
- struct section_addr_info *result = NULL;
- int section_count = bfd_count_sections (abfd);
- asection *text_section = bfd_get_section_by_name (abfd, ".text");
- CORE_ADDR text_vma;
-
- if (!text_section)
- {
- /* Couldn't get the .text section. Weird. */
- }
-
- else if (text_load == (text_vma = bfd_get_section_vma (abfd, text_section)))
- {
- /* DLL wasn't relocated. */
- }
-
- else
- {
- /* Figure out all sections' loaded addresses. The offset here is
- such that taking a bfd_get_section_vma() result and adding
- offset will give the real load address of the section. */
-
- CORE_ADDR offset = text_load - text_vma;
-
- struct section_table *table_start = NULL;
- struct section_table *table_end = NULL;
- struct section_table *iter = NULL;
-
- build_section_table (abfd, &table_start, &table_end);
-
- for (iter = table_start; iter < table_end; ++iter)
- {
- /* Relocated addresses. */
- iter->addr += offset;
- iter->endaddr += offset;
- }
-
- result = build_section_addr_info_from_section_table (table_start,
- table_end);
-
- xfree (table_start);
- }
-
- return result;
-}
-
-/* Add DLL symbol information. */
-static void
-solib_symbols_add (struct so_list *so, CORE_ADDR load_addr)
-{
- struct section_addr_info *addrs = NULL;
- static struct objfile *result = NULL;
- char *name = so->so_name;
- bfd *abfd = NULL;
-
- /* The symbols in a dll are offset by 0x1000, which is the
- the offset from 0 of the first byte in an image - because
- of the file header and the section alignment. */
-
- if (!name || !name[0])
- return;
-
- abfd = bfd_openr (name, "pei-i386");
-
- if (!abfd)
- {
- /* pei failed - try pe */
- abfd = bfd_openr (name, "pe-i386");
- }
-
- if (abfd)
- {
- if (bfd_check_format (abfd, bfd_object))
- addrs = get_relocated_section_addrs (abfd, load_addr);
-
- bfd_close (abfd);
- }
-
- if (addrs)
- {
- result = safe_symbol_file_add (name, 0, addrs, 0, OBJF_SHARED);
- free_section_addr_info (addrs);
- }
- else
- {
- /* Fallback on handling just the .text section. */
- struct cleanup *my_cleanups;
-
- addrs = alloc_section_addr_info (1);
- my_cleanups = make_cleanup (xfree, addrs);
- addrs->other[0].name = ".text";
- addrs->other[0].addr = load_addr;
-
- result = safe_symbol_file_add (name, 0, addrs, 0, OBJF_SHARED);
- do_cleanups (my_cleanups);
- }
-
- so->symbols_loaded = !!result;
- return;
-}
-
-/* Remember the maximum DLL length for printing in info dll command. */
-static int max_dll_name_len;
-
-static char *
-register_loaded_dll (const char *name, DWORD load_addr, int readsyms)
+static struct so_list *
+windows_make_so (const char *name, LPVOID load_addr)
{
struct so_list *so;
- char buf[MAX_PATH + 1];
- char cwd[MAX_PATH + 1];
char *p;
+#ifndef __CYGWIN__
+ char buf[__PMAX];
+ char cwd[__PMAX];
WIN32_FIND_DATA w32_fd;
HANDLE h = FindFirstFile(name, &w32_fd);
- MEMORY_BASIC_INFORMATION m;
- size_t len;
if (h == INVALID_HANDLE_VALUE)
strcpy (buf, name);
SetCurrentDirectory (cwd);
}
}
-
if (strcasecmp (buf, "ntdll.dll") == 0)
{
GetSystemDirectory (buf, sizeof (buf));
strcat (buf, "\\ntdll.dll");
}
- so = (struct so_list *) xmalloc (sizeof (struct so_list));
- memset (so, 0, sizeof (*so));
+#else
+ cygwin_buf_t buf[__PMAX];
+
+ buf[0] = 0;
+ if (access (name, F_OK) != 0)
+ {
+ if (strcasecmp (name, "ntdll.dll") == 0)
+#ifdef __USEWIDE
+ {
+ GetSystemDirectoryW (buf, sizeof (buf) / sizeof (wchar_t));
+ wcscat (buf, L"\\ntdll.dll");
+ }
+#else
+ {
+ GetSystemDirectoryA (buf, sizeof (buf) / sizeof (wchar_t));
+ strcat (buf, "\\ntdll.dll");
+ }
+#endif
+ }
+#endif
+ so = XCNEW (struct so_list);
so->lm_info = (struct lm_info *) xmalloc (sizeof (struct lm_info));
so->lm_info->load_addr = load_addr;
- cygwin_conv_to_posix_path (buf, so->so_name);
- strcpy (so->so_original_name, so->so_name);
+ strcpy (so->so_original_name, name);
+#ifndef __CYGWIN__
+ strcpy (so->so_name, buf);
+#else
+ if (buf[0])
+ cygwin_conv_path (CCP_WIN_W_TO_POSIX, buf, so->so_name,
+ SO_NAME_MAX_PATH_SIZE);
+ else
+ {
+ char *rname = realpath (name, NULL);
+ if (rname && strlen (rname) < SO_NAME_MAX_PATH_SIZE)
+ {
+ strcpy (so->so_name, rname);
+ free (rname);
+ }
+ else
+ error (_("dll path too long"));
+ }
+ /* Record cygwin1.dll .text start/end. */
+ p = strchr (so->so_name, '\0') - (sizeof ("/cygwin1.dll") - 1);
+ if (p >= so->so_name && strcasecmp (p, "/cygwin1.dll") == 0)
+ {
+ bfd *abfd;
+ asection *text = NULL;
+ CORE_ADDR text_vma;
+
+ abfd = gdb_bfd_open (so->so_name, "pei-i386", -1);
+
+ if (!abfd)
+ return so;
+
+ if (bfd_check_format (abfd, bfd_object))
+ text = bfd_get_section_by_name (abfd, ".text");
+
+ if (!text)
+ {
+ gdb_bfd_unref (abfd);
+ return so;
+ }
+
+ /* The symbols in a dll are offset by 0x1000, which is the
+ offset from 0 of the first byte in an image - because of the
+ file header and the section alignment. */
+ cygwin_load_start = (CORE_ADDR) (uintptr_t) ((char *)
+ load_addr + 0x1000);
+ cygwin_load_end = cygwin_load_start + bfd_section_size (abfd, text);
+
+ gdb_bfd_unref (abfd);
+ }
+#endif
- solib_end->next = so;
- solib_end = so;
- len = strlen (so->so_name);
- if (len > max_dll_name_len)
- max_dll_name_len = len;
- if (readsyms)
- solib_symbols_add (so, (CORE_ADDR) load_addr);
- return so->so_name;
+ return so;
}
static char *
get_image_name (HANDLE h, void *address, int unicode)
{
- static char buf[(2 * MAX_PATH) + 1];
+#ifdef __CYGWIN__
+ static char buf[__PMAX];
+#else
+ static char buf[(2 * __PMAX) + 1];
+#endif
DWORD size = unicode ? sizeof (WCHAR) : sizeof (char);
char *address_ptr;
int len = 0;
char b[2];
- DWORD done;
+ SIZE_T done;
/* Attempt to read the name of the dll that was detected.
This is documented to work only when actively debugging
- a program. It will not work for attached processes. */
+ a program. It will not work for attached processes. */
if (address == NULL)
return NULL;
/* See if we could read the address of a string, and that the
- address isn't null. */
- if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done)
+ address isn't null. */
+ if (!ReadProcessMemory (h, address, &address_ptr,
+ sizeof (address_ptr), &done)
|| done != sizeof (address_ptr) || !address_ptr)
return NULL;
- /* Find the length of the string */
+ /* Find the length of the string. */
while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done)
&& (b[0] != 0 || b[size - 1] != 0) && done == size)
continue;
WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR));
ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR),
&done);
-
- WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0);
+#ifdef __CYGWIN__
+ wcstombs (buf, unicode_address, __PMAX);
+#else
+ WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, sizeof buf,
+ 0, 0);
+#endif
}
return buf;
handle_load_dll (void *dummy)
{
LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll;
- char dll_buf[MAX_PATH + 1];
+ char dll_buf[__PMAX];
char *dll_name = NULL;
- char *p;
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
- if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf))
+ /* Try getting the DLL name by searching the list of known modules
+ and matching their base address against this new DLL's base address.
+
+ FIXME: brobecker/2013-12-10:
+ It seems odd to be going through this search if the DLL name could
+ simply be extracted via "event->lpImageName". Moreover, some
+ experimentation with various versions of Windows seem to indicate
+ that it might still be too early for this DLL to be listed when
+ querying the system about the current list of modules, thus making
+ this attempt pointless.
+
+ This code can therefore probably be removed. But at the time of
+ this writing, we are too close to creating the GDB 7.7 branch
+ for us to make such a change. We are therefore defering it. */
+
+ if (!get_module_name (event->lpBaseOfDll, dll_buf))
dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0';
dll_name = dll_buf;
+ /* Try getting the DLL name via the lpImageName field of the event.
+ Note that Microsoft documents this fields as strictly optional,
+ in the sense that it might be NULL. And the first DLL event in
+ particular is explicitly documented as "likely not pass[ed]"
+ (source: MSDN LOAD_DLL_DEBUG_INFO structure). */
if (*dll_name == '\0')
- dll_name = get_image_name (current_process_handle, event->lpImageName, event->fUnicode);
+ dll_name = get_image_name (current_process_handle,
+ event->lpImageName, event->fUnicode);
if (!dll_name)
return 1;
- register_loaded_dll (dll_name, (DWORD) event->lpBaseOfDll + 0x1000, auto_solib_add);
+ solib_end->next = windows_make_so (dll_name, event->lpBaseOfDll);
+ solib_end = solib_end->next;
+
+ DEBUG_EVENTS (("gdb: Loading dll \"%s\" at %s.\n", solib_end->so_name,
+ host_address_to_string (solib_end->lm_info->load_addr)));
return 1;
}
static void
-win32_free_so (struct so_list *so)
+windows_free_so (struct so_list *so)
{
if (so->lm_info)
xfree (so->lm_info);
-}
-
-static void
-win32_relocate_section_addresses (struct so_list *so,
- struct section_table *sec)
-{
- /* FIXME */
- return;
-}
-
-static void
-win32_solib_create_inferior_hook (void)
-{
- solib_add (NULL, 0, NULL, auto_solib_add);
- return;
+ xfree (so);
}
static int
handle_unload_dll (void *dummy)
{
- DWORD lpBaseOfDll = (DWORD) current_event.u.UnloadDll.lpBaseOfDll + 0x1000;
+ LPVOID lpBaseOfDll = current_event.u.UnloadDll.lpBaseOfDll;
struct so_list *so;
for (so = &solib_start; so->next != NULL; so = so->next)
if (so->next->lm_info->load_addr == lpBaseOfDll)
{
struct so_list *sodel = so->next;
+
so->next = sodel->next;
if (!so->next)
solib_end = so;
- free_so (sodel);
+ DEBUG_EVENTS (("gdb: Unloading dll \"%s\".\n", sodel->so_name));
+
+ windows_free_so (sodel);
return 1;
}
- error (_("Error: dll starting at 0x%lx not found."), (DWORD) lpBaseOfDll);
+
+ /* We did not find any DLL that was previously loaded at this address,
+ so register a complaint. We do not report an error, because we have
+ observed that this may be happening under some circumstances. For
+ instance, running 32bit applications on x64 Windows causes us to receive
+ 4 mysterious UNLOAD_DLL_DEBUG_EVENTs during the startup phase (these
+ events are apparently caused by the WOW layer, the interface between
+ 32bit and 64bit worlds). */
+ complaint (&symfile_complaints, _("dll starting at %s not found."),
+ host_address_to_string (lpBaseOfDll));
return 0;
}
-/* Clear list of loaded DLLs. */
+/* Clear list of loaded DLLs. */
static void
-win32_clear_solib (void)
+windows_clear_solib (void)
{
solib_start.next = NULL;
solib_end = &solib_start;
- max_dll_name_len = sizeof ("DLL Name") - 1;
}
+/* Load DLL symbol info. */
static void
-win32_special_symbol_handling (void)
-{
- return;
-}
-
-/* Load DLL symbol info. */
-void
dll_symbol_command (char *args, int from_tty)
{
int n;
safe_symbol_file_add (args, from_tty, NULL, 0, OBJF_SHARED | OBJF_USERLOADED);
}
-/* List currently loaded DLLs. */
-static void
-info_dll_command (char *ignore, int from_tty)
-{
- struct so_list *so = &solib_start;
-
- if (!so->next)
- return;
-
- printf_filtered ("%*s Load Address\n", -max_dll_name_len, "DLL Name");
- while ((so = so->next) != NULL)
- printf_filtered ("%*s %08lx\n", -max_dll_name_len, so->so_name, so->lm_info->load_addr);
-
- return;
-}
-
/* Handle DEBUG_STRING output from child process.
Cygwin prepends its messages with a "cygwin:". Interpret this as
- a Cygwin signal. Otherwise just print the string as a warning. */
+ a Cygwin signal. Otherwise just print the string as a warning. */
static int
handle_output_debug_string (struct target_waitstatus *ourstatus)
{
- char *s;
- int gotasig = FALSE;
+ char *s = NULL;
+ int retval = 0;
if (!target_read_string
- ((CORE_ADDR) current_event.u.DebugString.lpDebugStringData, &s, 1024, 0)
+ ((CORE_ADDR) (uintptr_t) current_event.u.DebugString.lpDebugStringData,
+ &s, 1024, 0)
|| !s || !*s)
- return gotasig;
-
- if (strncmp (s, CYGWIN_SIGNAL_STRING, sizeof (CYGWIN_SIGNAL_STRING) - 1) != 0)
+ /* nothing to do */;
+ else if (strncmp (s, _CYGWIN_SIGNAL_STRING,
+ sizeof (_CYGWIN_SIGNAL_STRING) - 1) != 0)
{
+#ifdef __CYGWIN__
if (strncmp (s, "cYg", 3) != 0)
+#endif
warning (("%s"), s);
}
+#ifdef __COPY_CONTEXT_SIZE
else
{
+ /* Got a cygwin signal marker. A cygwin signal is followed by
+ the signal number itself and then optionally followed by the
+ thread id and address to saved context within the DLL. If
+ these are supplied, then the given thread is assumed to have
+ issued the signal and the context from the thread is assumed
+ to be stored at the given address in the inferior. Tell gdb
+ to treat this like a real signal. */
char *p;
- int sig = strtol (s + sizeof (CYGWIN_SIGNAL_STRING) - 1, &p, 0);
- gotasig = target_signal_from_host (sig);
+ int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
+ int gotasig = gdb_signal_from_host (sig);
+
ourstatus->value.sig = gotasig;
if (gotasig)
- ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ {
+ LPCVOID x;
+ SIZE_T n;
+
+ ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ retval = strtoul (p, &p, 0);
+ if (!retval)
+ retval = main_thread_id;
+ else if ((x = (LPCVOID) (uintptr_t) strtoull (p, NULL, 0))
+ && ReadProcessMemory (current_process_handle, x,
+ &saved_context,
+ __COPY_CONTEXT_SIZE, &n)
+ && n == __COPY_CONTEXT_SIZE)
+ have_saved_context = 1;
+ current_event.dwThreadId = retval;
+ }
}
+#endif
- xfree (s);
- return gotasig;
+ if (s)
+ xfree (s);
+ return retval;
}
static int
if (GetThreadSelectorEntry (thread, sel, &info))
{
int base, limit;
- printf_filtered ("0x%03lx: ", sel);
+ printf_filtered ("0x%03x: ", (unsigned) sel);
if (!info.HighWord.Bits.Pres)
{
puts_filtered ("Segment not present\n");
}
else
{
- printf_filtered ("Invalid selector 0x%lx.\n",sel);
+ DWORD err = GetLastError ();
+ if (err == ERROR_NOT_SUPPORTED)
+ printf_filtered ("Function not supported\n");
+ else
+ printf_filtered ("Invalid selector 0x%x.\n", (unsigned) sel);
return 0;
}
}
}
}
-static struct cmd_list_element *info_w32_cmdlist = NULL;
-
-static void
-info_w32_command (char *args, int from_tty)
-{
- help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout);
-}
-
-
#define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \
- printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \
- (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress)
+ printf_unfiltered ("gdb: Target exception %s at %s\n", x, \
+ host_address_to_string (\
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress))
static int
handle_exception (struct target_waitstatus *ourstatus)
ourstatus->kind = TARGET_WAITKIND_STOPPED;
- /* Record the context of the current thread */
+ /* Record the context of the current thread. */
th = thread_rec (current_event.dwThreadId, -1);
switch (code)
{
case EXCEPTION_ACCESS_VIOLATION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ ourstatus->value.sig = GDB_SIGNAL_SEGV;
+#ifdef __CYGWIN__
{
- char *fn;
- if (find_pc_partial_function ((CORE_ADDR) current_event.u.Exception
- .ExceptionRecord.ExceptionAddress,
- &fn, NULL, NULL)
- && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)
+ /* See if the access violation happened within the cygwin DLL
+ itself. Cygwin uses a kind of exception handling to deal
+ with passed-in invalid addresses. gdb should not treat
+ these as real SEGVs since they will be silently handled by
+ cygwin. A real SEGV will (theoretically) be caught by
+ cygwin later in the process and will be sent as a
+ cygwin-specific-signal. So, ignore SEGVs if they show up
+ within the text segment of the DLL itself. */
+ const char *fn;
+ CORE_ADDR addr = (CORE_ADDR) (uintptr_t)
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress;
+
+ if ((!cygwin_exceptions && (addr >= cygwin_load_start
+ && addr < cygwin_load_end))
+ || (find_pc_partial_function (addr, &fn, NULL, NULL)
+ && strncmp (fn, "KERNEL32!IsBad",
+ strlen ("KERNEL32!IsBad")) == 0))
return 0;
}
+#endif
break;
case STATUS_STACK_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ ourstatus->value.sig = GDB_SIGNAL_SEGV;
break;
case STATUS_FLOAT_DENORMAL_OPERAND:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DENORMAL_OPERAND");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ARRAY_BOUNDS_EXCEEDED");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_INEXACT_RESULT:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INEXACT_RESULT");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_INVALID_OPERATION:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_INVALID_OPERATION");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_OVERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_STACK_CHECK:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_STACK_CHECK");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_UNDERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_UNDERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_FLOAT_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_FLOAT_DIVIDE_BY_ZERO");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_INTEGER_DIVIDE_BY_ZERO:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_DIVIDE_BY_ZERO");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case STATUS_INTEGER_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_INTEGER_OVERFLOW");
- ourstatus->value.sig = TARGET_SIGNAL_FPE;
+ ourstatus->value.sig = GDB_SIGNAL_FPE;
break;
case EXCEPTION_BREAKPOINT:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT");
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
case DBG_CONTROL_C:
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_C");
- ourstatus->value.sig = TARGET_SIGNAL_INT;
+ ourstatus->value.sig = GDB_SIGNAL_INT;
break;
case DBG_CONTROL_BREAK:
DEBUG_EXCEPTION_SIMPLE ("DBG_CONTROL_BREAK");
- ourstatus->value.sig = TARGET_SIGNAL_INT;
+ ourstatus->value.sig = GDB_SIGNAL_INT;
break;
case EXCEPTION_SINGLE_STEP:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_SINGLE_STEP");
- ourstatus->value.sig = TARGET_SIGNAL_TRAP;
+ ourstatus->value.sig = GDB_SIGNAL_TRAP;
break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ILLEGAL_INSTRUCTION");
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
case EXCEPTION_PRIV_INSTRUCTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_PRIV_INSTRUCTION");
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_NONCONTINUABLE_EXCEPTION");
- ourstatus->value.sig = TARGET_SIGNAL_ILL;
+ ourstatus->value.sig = GDB_SIGNAL_ILL;
break;
default:
+ /* Treat unhandled first chance exceptions specially. */
if (current_event.u.Exception.dwFirstChance)
- return 0;
- printf_unfiltered ("gdb: unknown target exception 0x%08lx at 0x%08lx\n",
- current_event.u.Exception.ExceptionRecord.ExceptionCode,
- (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress);
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ return -1;
+ printf_unfiltered ("gdb: unknown target exception 0x%08x at %s\n",
+ (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
+ host_address_to_string (
+ current_event.u.Exception.ExceptionRecord.ExceptionAddress));
+ ourstatus->value.sig = GDB_SIGNAL_UNKNOWN;
break;
}
exception_count++;
}
/* Resume all artificially suspended threads if we are continuing
- execution */
+ execution. */
static BOOL
-win32_continue (DWORD continue_status, int id)
+windows_continue (DWORD continue_status, int id)
{
int i;
thread_info *th;
BOOL res;
- DEBUG_EVENTS (("ContinueDebugEvent (cpid=%ld, ctid=%ld, %s);\n",
- current_event.dwProcessId, current_event.dwThreadId,
+ DEBUG_EVENTS (("ContinueDebugEvent (cpid=%d, ctid=0x%x, %s);\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
continue_status == DBG_CONTINUE ?
"DBG_CONTINUE" : "DBG_EXCEPTION_NOT_HANDLED"));
+
+ for (th = &thread_head; (th = th->next) != NULL;)
+ if ((id == -1 || id == (int) th->id)
+ && th->suspended)
+ {
+ if (debug_registers_changed)
+ {
+ th->context.ContextFlags |= CONTEXT_DEBUG_REGISTERS;
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ th->context.Dr6 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ }
+ if (th->context.ContextFlags)
+ {
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
+ if (th->suspended > 0)
+ (void) ResumeThread (th->h);
+ th->suspended = 0;
+ }
+
res = ContinueDebugEvent (current_event.dwProcessId,
current_event.dwThreadId,
continue_status);
- continue_status = 0;
- if (res)
- for (th = &thread_head; (th = th->next) != NULL;)
- if (((id == -1) || (id == (int) th->id)) && th->suspend_count)
- {
-
- for (i = 0; i < th->suspend_count; i++)
- (void) ResumeThread (th->h);
- th->suspend_count = 0;
- if (debug_registers_changed)
- {
- /* Only change the value of the debug registers */
- th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
- th->context.Dr0 = dr[0];
- th->context.Dr1 = dr[1];
- th->context.Dr2 = dr[2];
- th->context.Dr3 = dr[3];
- /* th->context.Dr6 = dr[6];
- FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr[7];
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
- }
debug_registers_changed = 0;
return res;
{
current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE,
current_event.dwProcessId);
+ if (current_process_handle != NULL)
+ open_process_used = 1;
+ else
+ {
+ error (_("OpenProcess call failed, GetLastError = %u"),
+ (unsigned) GetLastError ());
+ /* We can not debug anything in that case. */
+ }
main_thread_id = current_event.dwThreadId;
- current_thread = win32_add_thread (main_thread_id,
- current_event.u.CreateThread.hThread);
+ current_thread = windows_add_thread (
+ ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateThread.hThread,
+ current_event.u.CreateThread.lpThreadLocalBase);
return main_thread_id;
}
-/* Get the next event from the child. Return 1 if the event requires
- handling by WFI (or whatever).
- */
-static int
-get_win32_debug_event (int pid, struct target_waitstatus *ourstatus)
+static void
+windows_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum gdb_signal sig)
{
- BOOL debug_event;
- DWORD continue_status, event_code;
thread_info *th;
- static thread_info dummy_thread_info;
- int retval = 0;
-
- last_sig = TARGET_SIGNAL_0;
-
- if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
- goto out;
+ DWORD continue_status = DBG_CONTINUE;
- event_count++;
- continue_status = DBG_CONTINUE;
+ /* A specific PTID means `step only this thread id'. */
+ int resume_all = ptid_equal (ptid, minus_one_ptid);
- event_code = current_event.dwDebugEventCode;
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- th = NULL;
+ /* If we're continuing all threads, it's the current inferior that
+ should be handled specially. */
+ if (resume_all)
+ ptid = inferior_ptid;
- switch (event_code)
+ if (sig != GDB_SIGNAL_0)
{
- case CREATE_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%x code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "CREATE_THREAD_DEBUG_EVENT"));
- if (saw_create != 1)
+ if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
{
- if (!saw_create && attach_flag)
- {
- /* Kludge around a Windows bug where first event is a create
- thread event. Caused when attached process does not have
- a main thread. */
- retval = ourstatus->value.related_pid = fake_create_process ();
- saw_create++;
- }
- break;
+ DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
}
- /* Record the existence of this thread */
- th = win32_add_thread (current_event.dwThreadId,
- current_event.u.CreateThread.hThread);
- if (info_verbose)
- printf_unfiltered ("[New %s]\n",
- target_pid_to_str (
- pid_to_ptid (current_event.dwThreadId)));
- retval = current_event.dwThreadId;
- break;
-
- case EXIT_THREAD_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
- (unsigned) current_event.dwProcessId,
- (unsigned) current_event.dwThreadId,
- "EXIT_THREAD_DEBUG_EVENT"));
+ else if (sig == last_sig)
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ else
+#if 0
+/* This code does not seem to work, because
+ the kernel does probably not consider changes in the ExceptionRecord
+ structure when passing the exception to the inferior.
+ Note that this seems possible in the exception handler itself. */
+ {
+ int i;
+ for (i = 0; xlate[i].them != -1; i++)
+ if (xlate[i].us == sig)
+ {
+ current_event.u.Exception.ExceptionRecord.ExceptionCode
+ = xlate[i].them;
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ }
+ if (continue_status == DBG_CONTINUE)
+ {
+ DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
+ }
+ }
+#endif
+ DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
+ last_sig));
+ }
+
+ last_sig = GDB_SIGNAL_0;
+
+ DEBUG_EXEC (("gdb: windows_resume (pid=%d, tid=%ld, step=%d, sig=%d);\n",
+ ptid_get_pid (ptid), ptid_get_tid (ptid), step, sig));
+
+ /* Get context for currently selected thread. */
+ th = thread_rec (ptid_get_tid (inferior_ptid), FALSE);
+ if (th)
+ {
+ if (step)
+ {
+ /* Single step by setting t bit. */
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ windows_fetch_inferior_registers (ops, regcache,
+ gdbarch_ps_regnum (gdbarch));
+ th->context.EFlags |= FLAG_TRACE_BIT;
+ }
+
+ if (th->context.ContextFlags)
+ {
+ if (debug_registers_changed)
+ {
+ th->context.Dr0 = dr[0];
+ th->context.Dr1 = dr[1];
+ th->context.Dr2 = dr[2];
+ th->context.Dr3 = dr[3];
+ th->context.Dr6 = DR6_CLEAR_VALUE;
+ th->context.Dr7 = dr[7];
+ }
+ CHECK (SetThreadContext (th->h, &th->context));
+ th->context.ContextFlags = 0;
+ }
+ }
+
+ /* Allow continuing with the same signal that interrupted us.
+ Otherwise complain. */
+
+ if (resume_all)
+ windows_continue (continue_status, -1);
+ else
+ windows_continue (continue_status, ptid_get_tid (ptid));
+}
+
+/* Ctrl-C handler used when the inferior is not run in the same console. The
+ handler is in charge of interrupting the inferior using DebugBreakProcess.
+ Note that this function is not available prior to Windows XP. In this case
+ we emit a warning. */
+static BOOL WINAPI
+ctrl_c_handler (DWORD event_type)
+{
+ const int attach_flag = current_inferior ()->attach_flag;
+
+ /* Only handle Ctrl-C and Ctrl-Break events. Ignore others. */
+ if (event_type != CTRL_C_EVENT && event_type != CTRL_BREAK_EVENT)
+ return FALSE;
+
+ /* If the inferior and the debugger share the same console, do nothing as
+ the inferior has also received the Ctrl-C event. */
+ if (!new_console && !attach_flag)
+ return TRUE;
+
+ if (!DebugBreakProcess (current_process_handle))
+ warning (_("Could not interrupt program. "
+ "Press Ctrl-c in the program console."));
+
+ /* Return true to tell that Ctrl-C has been handled. */
+ return TRUE;
+}
+
+/* Get the next event from the child. Return 1 if the event requires
+ handling by WFI (or whatever). */
+static int
+get_windows_debug_event (struct target_ops *ops,
+ int pid, struct target_waitstatus *ourstatus)
+{
+ BOOL debug_event;
+ DWORD continue_status, event_code;
+ thread_info *th;
+ static thread_info dummy_thread_info;
+ int retval = 0;
+
+ last_sig = GDB_SIGNAL_0;
+
+ if (!(debug_event = WaitForDebugEvent (¤t_event, 1000)))
+ goto out;
+
+ event_count++;
+ continue_status = DBG_CONTINUE;
+
+ event_code = current_event.dwDebugEventCode;
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ th = NULL;
+ have_saved_context = 0;
+
+ switch (event_code)
+ {
+ case CREATE_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "CREATE_THREAD_DEBUG_EVENT"));
+ if (saw_create != 1)
+ {
+ struct inferior *inf;
+ inf = find_inferior_pid (current_event.dwProcessId);
+ if (!saw_create && inf->attach_flag)
+ {
+ /* Kludge around a Windows bug where first event is a create
+ thread event. Caused when attached process does not have
+ a main thread. */
+ retval = fake_create_process ();
+ if (retval)
+ saw_create++;
+ }
+ break;
+ }
+ /* Record the existence of this thread. */
+ retval = current_event.dwThreadId;
+ th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateThread.hThread,
+ current_event.u.CreateThread.lpThreadLocalBase);
+
+ break;
+
+ case EXIT_THREAD_DEBUG_EVENT:
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId,
+ "EXIT_THREAD_DEBUG_EVENT"));
+
if (current_event.dwThreadId != main_thread_id)
{
- win32_delete_thread (current_event.dwThreadId);
+ windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.ExitThread.dwExitCode);
th = &dummy_thread_info;
}
break;
case CREATE_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"CREATE_PROCESS_DEBUG_EVENT"));
CloseHandle (current_event.u.CreateProcessInfo.hFile);
if (++saw_create != 1)
- {
- CloseHandle (current_event.u.CreateProcessInfo.hProcess);
- break;
- }
+ break;
current_process_handle = current_event.u.CreateProcessInfo.hProcess;
if (main_thread_id)
- win32_delete_thread (main_thread_id);
+ windows_delete_thread (ptid_build (current_event.dwProcessId, 0,
+ main_thread_id),
+ 0);
main_thread_id = current_event.dwThreadId;
- /* Add the main thread */
- th = win32_add_thread (main_thread_id,
- current_event.u.CreateProcessInfo.hThread);
- retval = ourstatus->value.related_pid = current_event.dwThreadId;
+ /* Add the main thread. */
+ th = windows_add_thread (ptid_build (current_event.dwProcessId, 0,
+ current_event.dwThreadId),
+ current_event.u.CreateProcessInfo.hThread,
+ current_event.u.CreateProcessInfo.lpThreadLocalBase);
+ retval = current_event.dwThreadId;
break;
case EXIT_PROCESS_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXIT_PROCESS_DEBUG_EVENT"));
- if (saw_create != 1)
- break;
- ourstatus->kind = TARGET_WAITKIND_EXITED;
- ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
- CloseHandle (current_process_handle);
- retval = main_thread_id;
+ if (!windows_initialization_done)
+ {
+ target_terminal_ours ();
+ target_mourn_inferior ();
+ error (_("During startup program exited with code 0x%x."),
+ (unsigned int) current_event.u.ExitProcess.dwExitCode);
+ }
+ else if (saw_create == 1)
+ {
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode;
+ retval = main_thread_id;
+ }
break;
case LOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"LOAD_DLL_DEBUG_EVENT"));
if (saw_create != 1)
break;
catch_errors (handle_load_dll, NULL, (char *) "", RETURN_MASK_ALL);
- registers_changed (); /* mark all regs invalid */
ourstatus->kind = TARGET_WAITKIND_LOADED;
ourstatus->value.integer = 0;
retval = main_thread_id;
- re_enable_breakpoints_in_shlibs ();
break;
case UNLOAD_DLL_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"UNLOAD_DLL_DEBUG_EVENT"));
if (saw_create != 1)
break;
catch_errors (handle_unload_dll, NULL, (char *) "", RETURN_MASK_ALL);
- registers_changed (); /* mark all regs invalid */
- /* ourstatus->kind = TARGET_WAITKIND_UNLOADED;
- does not exist yet. */
+ ourstatus->kind = TARGET_WAITKIND_LOADED;
+ ourstatus->value.integer = 0;
+ retval = main_thread_id;
break;
case EXCEPTION_DEBUG_EVENT:
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"EXCEPTION_DEBUG_EVENT"));
if (saw_create != 1)
break;
- if (handle_exception (ourstatus))
- retval = current_event.dwThreadId;
- else
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ switch (handle_exception (ourstatus))
+ {
+ case 0:
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
+ break;
+ case 1:
+ retval = current_event.dwThreadId;
+ break;
+ case -1:
+ last_sig = 1;
+ continue_status = -1;
+ break;
+ }
break;
- case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */
- DEBUG_EVENTS (("gdb: kernel event for pid=%d tid=%d code=%s)\n",
+ case OUTPUT_DEBUG_STRING_EVENT: /* Message from the kernel. */
+ DEBUG_EVENTS (("gdb: kernel event for pid=%u tid=0x%x code=%s)\n",
(unsigned) current_event.dwProcessId,
(unsigned) current_event.dwThreadId,
"OUTPUT_DEBUG_STRING_EVENT"));
if (saw_create != 1)
break;
- if (handle_output_debug_string (ourstatus))
- retval = main_thread_id;
+ retval = handle_output_debug_string (ourstatus);
break;
default:
if (saw_create != 1)
break;
- printf_unfiltered ("gdb: kernel event for pid=%ld tid=%ld\n",
- (DWORD) current_event.dwProcessId,
- (DWORD) current_event.dwThreadId);
- printf_unfiltered (" unknown event code %ld\n",
- current_event.dwDebugEventCode);
+ printf_unfiltered ("gdb: kernel event for pid=%u tid=0x%x\n",
+ (unsigned) current_event.dwProcessId,
+ (unsigned) current_event.dwThreadId);
+ printf_unfiltered (" unknown event code %u\n",
+ (unsigned) current_event.dwDebugEventCode);
break;
}
if (!retval || saw_create != 1)
- CHECK (win32_continue (continue_status, -1));
+ {
+ if (continue_status == -1)
+ windows_resume (ops, minus_one_ptid, 0, 1);
+ else
+ CHECK (windows_continue (continue_status, -1));
+ }
else
{
- inferior_ptid = pid_to_ptid (retval);
+ inferior_ptid = ptid_build (current_event.dwProcessId, 0,
+ retval);
current_thread = th ?: thread_rec (current_event.dwThreadId, TRUE);
}
return retval;
}
-/* Wait for interesting events to occur in the target process. */
+/* Wait for interesting events to occur in the target process. */
static ptid_t
-win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+windows_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *ourstatus, int options)
{
- int pid = PIDGET (ptid);
+ int pid = -1;
+
+ target_terminal_ours ();
/* We loop when we get a non-standard exception rather than return
with a SPURIOUS because resume can try and step or modify things,
which needs a current_thread->h. But some of these exceptions mark
the birth or death of threads, which mean that the current thread
- isn't necessarily what you think it is. */
+ isn't necessarily what you think it is. */
while (1)
{
- int retval = get_win32_debug_event (pid, ourstatus);
+ int retval;
+
+ /* If the user presses Ctrl-c while the debugger is waiting
+ for an event, he expects the debugger to interrupt his program
+ and to get the prompt back. There are two possible situations:
+
+ - The debugger and the program do not share the console, in
+ which case the Ctrl-c event only reached the debugger.
+ In that case, the ctrl_c handler will take care of interrupting
+ the inferior. Note that this case is working starting with
+ Windows XP. For Windows 2000, Ctrl-C should be pressed in the
+ inferior console.
+
+ - The debugger and the program share the same console, in which
+ case both debugger and inferior will receive the Ctrl-c event.
+ In that case the ctrl_c handler will ignore the event, as the
+ Ctrl-c event generated inside the inferior will trigger the
+ expected debug event.
+
+ FIXME: brobecker/2008-05-20: If the inferior receives the
+ signal first and the delay until GDB receives that signal
+ is sufficiently long, GDB can sometimes receive the SIGINT
+ after we have unblocked the CTRL+C handler. This would
+ lead to the debugger stopping prematurely while handling
+ the new-thread event that comes with the handling of the SIGINT
+ inside the inferior, and then stop again immediately when
+ the user tries to resume the execution in the inferior.
+ This is a classic race that we should try to fix one day. */
+ SetConsoleCtrlHandler (&ctrl_c_handler, TRUE);
+ retval = get_windows_debug_event (ops, pid, ourstatus);
+ SetConsoleCtrlHandler (&ctrl_c_handler, FALSE);
+
if (retval)
- return pid_to_ptid (retval);
+ return ptid_build (current_event.dwProcessId, 0, retval);
else
{
int detach = 0;
detach = deprecated_ui_loop_hook (0);
if (detach)
- win32_kill_inferior ();
+ windows_kill_inferior (ops);
+ }
+ }
+}
+
+/* On certain versions of Windows, the information about ntdll.dll
+ is not available yet at the time we get the LOAD_DLL_DEBUG_EVENT,
+ thus preventing us from reporting this DLL as an SO. This has been
+ witnessed on Windows 8.1, for instance. A possible explanation
+ is that ntdll.dll might be mapped before the SO info gets created
+ by the Windows system -- ntdll.dll is the first DLL to be reported
+ via LOAD_DLL_DEBUG_EVENT and other DLLs do not seem to suffer from
+ that problem.
+
+ If we indeed are missing ntdll.dll, this function tries to recover
+ from this issue, after the fact. Do nothing if we encounter any
+ issue trying to locate that DLL. */
+
+static void
+windows_ensure_ntdll_loaded (void)
+{
+ struct so_list *so;
+ HMODULE dummy_hmodule;
+ DWORD cb_needed;
+ HMODULE *hmodules;
+ int i;
+
+ for (so = solib_start.next; so != NULL; so = so->next)
+ if (FILENAME_CMP (lbasename (so->so_name), "ntdll.dll") == 0)
+ return; /* ntdll.dll already loaded, nothing to do. */
+
+ if (EnumProcessModules (current_process_handle, &dummy_hmodule,
+ sizeof (HMODULE), &cb_needed) == 0)
+ return;
+
+ if (cb_needed < 1)
+ return;
+
+ hmodules = (HMODULE *) alloca (cb_needed);
+ if (EnumProcessModules (current_process_handle, hmodules,
+ cb_needed, &cb_needed) == 0)
+ return;
+
+ for (i = 0; i < (int) (cb_needed / sizeof (HMODULE)); i++)
+ {
+ MODULEINFO mi;
+#ifdef __USEWIDE
+ wchar_t dll_name[__PMAX];
+ char name[__PMAX];
+#else
+ char dll_name[__PMAX];
+ char *name;
+#endif
+ if (GetModuleInformation (current_process_handle, hmodules[i],
+ &mi, sizeof (mi)) == 0)
+ continue;
+ if (GetModuleFileNameEx (current_process_handle, hmodules[i],
+ dll_name, sizeof (dll_name)) == 0)
+ continue;
+#ifdef __USEWIDE
+ wcstombs (name, dll_name, __PMAX);
+#else
+ name = dll_name;
+#endif
+ if (FILENAME_CMP (lbasename (name), "ntdll.dll") == 0)
+ {
+ solib_end->next = windows_make_so (name, mi.lpBaseOfDll);
+ solib_end = solib_end->next;
+ return;
}
}
}
static void
-do_initial_win32_stuff (DWORD pid)
+do_initial_windows_stuff (struct target_ops *ops, DWORD pid, int attaching)
{
extern int stop_after_trap;
int i;
+ struct inferior *inf;
+ struct thread_info *tp;
- last_sig = TARGET_SIGNAL_0;
+ last_sig = GDB_SIGNAL_0;
event_count = 0;
exception_count = 0;
+ open_process_used = 0;
debug_registers_changed = 0;
debug_registers_used = 0;
for (i = 0; i < sizeof (dr) / sizeof (dr[0]); i++)
dr[i] = 0;
+#ifdef __CYGWIN__
+ cygwin_load_start = cygwin_load_end = 0;
+#endif
current_event.dwProcessId = pid;
memset (¤t_event, 0, sizeof (current_event));
- push_target (&win32_ops);
- disable_breakpoints_in_shlibs (1);
- win32_clear_solib ();
+ push_target (ops);
+ disable_breakpoints_in_shlibs ();
+ windows_clear_solib ();
clear_proceed_status ();
init_wait_for_inferior ();
- target_terminal_init ();
+ inf = current_inferior ();
+ inferior_appeared (inf, pid);
+ inf->attach_flag = attaching;
+
+ /* Make the new process the current inferior, so terminal handling
+ can rely on it. When attaching, we don't know about any thread
+ id here, but that's OK --- nothing should be referencing the
+ current thread until we report an event out of windows_wait. */
+ inferior_ptid = pid_to_ptid (pid);
+
+ terminal_init_inferior_with_pgrp (pid);
target_terminal_inferior ();
+ windows_initialization_done = 0;
+ inf->control.stop_soon = STOP_QUIETLY;
while (1)
{
stop_after_trap = 1;
wait_for_inferior ();
- if (stop_signal != TARGET_SIGNAL_TRAP)
- resume (0, stop_signal);
+ tp = inferior_thread ();
+ if (tp->suspend.stop_signal != GDB_SIGNAL_TRAP)
+ resume (0, tp->suspend.stop_signal);
else
break;
}
- stop_after_trap = 0;
- return;
-}
-
-/* Since Windows XP, detaching from a process is supported by Windows.
- The following code tries loading the appropriate functions dynamically.
- If loading these functions succeeds use them to actually detach from
- the inferior process, otherwise behave as usual, pretending that
- detach has worked. */
-static BOOL WINAPI (*DebugSetProcessKillOnExit)(BOOL);
-static BOOL WINAPI (*DebugActiveProcessStop)(DWORD);
-static int
-has_detach_ability (void)
-{
- static HMODULE kernel32 = NULL;
+ /* FIXME: brobecker/2013-12-10: We should try another approach where
+ we first ignore all DLL load/unload events up until this point,
+ and then iterate over all modules to create the associated shared
+ objects. This is a fairly significant change, however, and we are
+ close to creating a release branch, so we are delaying it a bit,
+ after the branch is created. */
+ windows_ensure_ntdll_loaded ();
- if (!kernel32)
- kernel32 = LoadLibrary ("kernel32.dll");
- if (kernel32)
- {
- if (!DebugSetProcessKillOnExit)
- DebugSetProcessKillOnExit = GetProcAddress (kernel32,
- "DebugSetProcessKillOnExit");
- if (!DebugActiveProcessStop)
- DebugActiveProcessStop = GetProcAddress (kernel32,
- "DebugActiveProcessStop");
- if (DebugSetProcessKillOnExit && DebugActiveProcessStop)
- return 1;
- }
- return 0;
+ windows_initialization_done = 1;
+ inf->control.stop_soon = NO_STOP_QUIETLY;
+ stop_after_trap = 0;
+ return;
}
/* Try to set or remove a user privilege to the current process. Return -1
This code is copied from the Cygwin source code and rearranged to allow
dynamically loading of the needed symbols from advapi32 which is only
- available on NT/2K/XP. */
+ available on NT/2K/XP. */
static int
set_process_privilege (const char *privilege, BOOL enable)
{
- static HMODULE advapi32 = NULL;
- static BOOL WINAPI (*OpenProcessToken)(HANDLE, DWORD, PHANDLE);
- static BOOL WINAPI (*LookupPrivilegeValue)(LPCSTR, LPCSTR, PLUID);
- static BOOL WINAPI (*AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES,
- DWORD, PTOKEN_PRIVILEGES, PDWORD);
-
HANDLE token_hdl = NULL;
LUID restore_priv;
TOKEN_PRIVILEGES new_priv, orig_priv;
int ret = -1;
DWORD size;
- if (GetVersion () >= 0x80000000) /* No security availbale on 9x/Me */
- return 0;
-
- if (!advapi32)
- {
- if (!(advapi32 = LoadLibrary ("advapi32.dll")))
- goto out;
- if (!OpenProcessToken)
- OpenProcessToken = GetProcAddress (advapi32, "OpenProcessToken");
- if (!LookupPrivilegeValue)
- LookupPrivilegeValue = GetProcAddress (advapi32,
- "LookupPrivilegeValueA");
- if (!AdjustTokenPrivileges)
- AdjustTokenPrivileges = GetProcAddress (advapi32,
- "AdjustTokenPrivileges");
- if (!OpenProcessToken || !LookupPrivilegeValue || !AdjustTokenPrivileges)
- {
- advapi32 = NULL;
- goto out;
- }
- }
-
if (!OpenProcessToken (GetCurrentProcess (),
TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES,
&token_hdl))
goto out;
- if (!LookupPrivilegeValue (NULL, privilege, &restore_priv))
+ if (!LookupPrivilegeValueA (NULL, privilege, &restore_priv))
goto out;
new_priv.PrivilegeCount = 1;
#if 0
/* Disabled, otherwise every `attach' in an unprivileged user session
would raise the "Failed to get SE_DEBUG_NAME privilege" warning in
- win32_attach(). */
+ windows_attach(). */
/* AdjustTokenPrivileges returns TRUE even if the privilege could not
- be enabled. GetLastError () returns an correct error code, though. */
+ be enabled. GetLastError () returns an correct error code, though. */
if (enable && GetLastError () == ERROR_NOT_ALL_ASSIGNED)
goto out;
#endif
/* Attach to process PID, then initialize for debugging it. */
static void
-win32_attach (char *args, int from_tty)
+windows_attach (struct target_ops *ops, char *args, int from_tty)
{
BOOL ok;
DWORD pid;
- if (!args)
- error_no_arg (_("process-id to attach"));
+ pid = parse_pid_to_attach (args);
if (set_process_privilege (SE_DEBUG_NAME, TRUE) < 0)
{
printf_unfiltered ("Warning: Failed to get SE_DEBUG_NAME privilege\n");
- printf_unfiltered ("This can cause attach to fail on Windows NT/2K/XP\n");
+ printf_unfiltered ("This can cause attach to "
+ "fail on Windows NT/2K/XP\n");
}
- pid = strtoul (args, 0, 0); /* Windows pid */
-
- win32_init_thread_list ();
+ windows_init_thread_list ();
ok = DebugActiveProcess (pid);
saw_create = 0;
+#ifdef __CYGWIN__
if (!ok)
{
- /* Try fall back to Cygwin pid */
+ /* Try fall back to Cygwin pid. */
pid = cygwin_internal (CW_CYGWIN_PID_TO_WINPID, pid);
if (pid > 0)
ok = DebugActiveProcess (pid);
+ }
+#endif
- if (!ok)
- error (_("Can't attach to process."));
- }
-
- if (has_detach_ability ())
- DebugSetProcessKillOnExit (FALSE);
+ if (!ok)
+ error (_("Can't attach to process."));
- attach_flag = 1;
+ DebugSetProcessKillOnExit (FALSE);
if (from_tty)
{
gdb_flush (gdb_stdout);
}
- do_initial_win32_stuff (pid);
+ do_initial_windows_stuff (ops, pid, 1);
target_terminal_ours ();
}
static void
-win32_detach (char *args, int from_tty)
+windows_detach (struct target_ops *ops, const char *args, int from_tty)
{
int detached = 1;
- if (has_detach_ability ())
+ ptid_t ptid = {-1};
+ windows_resume (ops, ptid, 0, GDB_SIGNAL_0);
+
+ if (!DebugActiveProcessStop (current_event.dwProcessId))
{
- delete_command (NULL, 0);
- win32_continue (DBG_CONTINUE, -1);
- if (!DebugActiveProcessStop (current_event.dwProcessId))
- {
- error (_("Can't detach process %lu (error %lu)"),
- current_event.dwProcessId, GetLastError ());
- detached = 0;
- }
- DebugSetProcessKillOnExit (FALSE);
+ error (_("Can't detach process %u (error %u)"),
+ (unsigned) current_event.dwProcessId, (unsigned) GetLastError ());
+ detached = 0;
}
+ DebugSetProcessKillOnExit (FALSE);
+
if (detached && from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
- printf_unfiltered ("Detaching from program: %s, Pid %lu\n", exec_file,
- current_event.dwProcessId);
+ printf_unfiltered ("Detaching from program: %s, Pid %u\n", exec_file,
+ (unsigned) current_event.dwProcessId);
gdb_flush (gdb_stdout);
}
+
+ i386_cleanup_dregs ();
inferior_ptid = null_ptid;
- unpush_target (&win32_ops);
+ detach_inferior (current_event.dwProcessId);
+
+ unpush_target (ops);
}
static char *
-win32_pid_to_exec_file (int pid)
-{
- /* Try to find the process path using the Cygwin internal process list
- pid isn't a valid pid, unfortunately. Use current_event.dwProcessId
- instead. */
- /* TODO: Also find native Windows processes using CW_GETPINFO_FULL. */
-
- static char path[MAX_PATH + 1];
- char *path_ptr = NULL;
- int cpid;
- struct external_pinfo *pinfo;
-
- cygwin_internal (CW_LOCK_PINFO, 1000);
- for (cpid = 0;
- (pinfo = (struct external_pinfo *)
- cygwin_internal (CW_GETPINFO, cpid | CW_NEXTPID));
- cpid = pinfo->pid)
+windows_pid_to_exec_file (int pid)
+{
+ static char path[__PMAX];
+#ifdef __CYGWIN__
+ /* Try to find exe name as symlink target of /proc/<pid>/exe. */
+ int nchars;
+ char procexe[sizeof ("/proc/4294967295/exe")];
+
+ xsnprintf (procexe, sizeof (procexe), "/proc/%u/exe", pid);
+ nchars = readlink (procexe, path, sizeof(path));
+ if (nchars > 0 && nchars < sizeof (path))
{
- if (pinfo->dwProcessId == current_event.dwProcessId) /* Got it */
- {
- cygwin_conv_to_full_posix_path (pinfo->progname, path);
- path_ptr = path;
- break;
- }
+ path[nchars] = '\0'; /* Got it */
+ return path;
}
- cygwin_internal (CW_UNLOCK_PINFO);
- return path_ptr;
+#endif
+
+ /* If we get here then either Cygwin is hosed, this isn't a Cygwin version
+ of gdb, or we're trying to debug a non-Cygwin windows executable. */
+ if (!get_module_name (0, path))
+ path[0] = '\0';
+
+ return path;
}
/* Print status information about what we're accessing. */
static void
-win32_files_info (struct target_ops *ignore)
+windows_files_info (struct target_ops *ignore)
{
+ struct inferior *inf = current_inferior ();
+
printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
+ inf->attach_flag ? "attached" : "child",
+ target_pid_to_str (inferior_ptid));
}
static void
-win32_open (char *arg, int from_tty)
+windows_open (char *arg, int from_tty)
{
error (_("Use the \"run\" command to start a Unix child process."));
}
-/* Start an inferior win32 child process and sets inferior_ptid to its pid.
+/* Modify CreateProcess parameters for use of a new separate console.
+ Parameters are:
+ *FLAGS: DWORD parameter for general process creation flags.
+ *SI: STARTUPINFO structure, for which the console window size and
+ console buffer size is filled in if GDB is running in a console.
+ to create the new console.
+ The size of the used font is not available on all versions of
+ Windows OS. Furthermore, the current font might not be the default
+ font, but this is still better than before.
+ If the windows and buffer sizes are computed,
+ SI->DWFLAGS is changed so that this information is used
+ by CreateProcess function. */
+
+static void
+windows_set_console_info (STARTUPINFO *si, DWORD *flags)
+{
+ HANDLE hconsole = CreateFile ("CONOUT$", GENERIC_READ | GENERIC_WRITE,
+ FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
+
+ if (hconsole != INVALID_HANDLE_VALUE)
+ {
+ CONSOLE_SCREEN_BUFFER_INFO sbinfo;
+ COORD font_size;
+ CONSOLE_FONT_INFO cfi;
+
+ GetCurrentConsoleFont (hconsole, FALSE, &cfi);
+ font_size = GetConsoleFontSize (hconsole, cfi.nFont);
+ GetConsoleScreenBufferInfo(hconsole, &sbinfo);
+ si->dwXSize = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1;
+ si->dwYSize = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1;
+ if (font_size.X)
+ si->dwXSize *= font_size.X;
+ else
+ si->dwXSize *= 8;
+ if (font_size.Y)
+ si->dwYSize *= font_size.Y;
+ else
+ si->dwYSize *= 12;
+ si->dwXCountChars = sbinfo.dwSize.X;
+ si->dwYCountChars = sbinfo.dwSize.Y;
+ si->dwFlags |= STARTF_USESIZE | STARTF_USECOUNTCHARS;
+ }
+ *flags |= CREATE_NEW_CONSOLE;
+}
+
+#ifndef __CYGWIN__
+/* Function called by qsort to sort environment strings. */
+
+static int
+envvar_cmp (const void *a, const void *b)
+{
+ const char **p = (const char **) a;
+ const char **q = (const char **) b;
+ return strcasecmp (*p, *q);
+}
+#endif
+
+#ifdef __CYGWIN__
+static void
+clear_win32_environment (char **env)
+{
+ int i;
+ size_t len;
+ wchar_t *copy = NULL, *equalpos;
+
+ for (i = 0; env[i] && *env[i]; i++)
+ {
+ len = mbstowcs (NULL, env[i], 0) + 1;
+ copy = (wchar_t *) xrealloc (copy, len * sizeof (wchar_t));
+ mbstowcs (copy, env[i], len);
+ equalpos = wcschr (copy, L'=');
+ if (equalpos)
+ *equalpos = L'\0';
+ SetEnvironmentVariableW (copy, NULL);
+ }
+ xfree (copy);
+}
+#endif
+
+/* Start an inferior windows child process and sets inferior_ptid to its pid.
EXEC_FILE is the file to run.
ALLARGS is a string containing the arguments to the program.
ENV is the environment vector to pass. Errors reported with error(). */
static void
-win32_create_inferior (char *exec_file, char *allargs, char **env,
- int from_tty)
+windows_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **in_env, int from_tty)
{
- char *winenv;
- char *temp;
- int envlen;
- int i;
STARTUPINFO si;
- PROCESS_INFORMATION pi;
- BOOL ret;
- DWORD flags;
- char *args;
- char real_path[MAXPATHLEN];
- char *toexec;
- char shell[MAX_PATH + 1]; /* Path to shell */
+#ifdef __CYGWIN__
+ cygwin_buf_t real_path[__PMAX];
+ cygwin_buf_t shell[__PMAX]; /* Path to shell */
const char *sh;
+ cygwin_buf_t *toexec;
+ cygwin_buf_t *cygallargs;
+ cygwin_buf_t *args;
+ char **old_env = NULL;
+ PWCHAR w32_env;
+ size_t len;
int tty;
int ostdin, ostdout, ostderr;
+#else
+ char real_path[__PMAX];
+ char shell[__PMAX]; /* Path to shell */
+ char *toexec;
+ char *args;
+ size_t args_len;
+ HANDLE tty;
+ char *w32env;
+ char *temp;
+ size_t envlen;
+ int i;
+ size_t envsize;
+ char **env;
+#endif
+ PROCESS_INFORMATION pi;
+ BOOL ret;
+ DWORD flags = 0;
const char *inferior_io_terminal = get_inferior_io_terminal ();
if (!exec_file)
memset (&si, 0, sizeof (si));
si.cb = sizeof (si);
+ if (new_group)
+ flags |= CREATE_NEW_PROCESS_GROUP;
+
+ if (new_console)
+ windows_set_console_info (&si, &flags);
+
+#ifdef __CYGWIN__
if (!useshell)
{
- flags = DEBUG_ONLY_THIS_PROCESS;
- cygwin_conv_to_win32_path (exec_file, real_path);
+ flags |= DEBUG_ONLY_THIS_PROCESS;
+ if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, exec_file, real_path,
+ __PMAX * sizeof (cygwin_buf_t)) < 0)
+ error (_("Error starting executable: %d"), errno);
toexec = real_path;
+#ifdef __USEWIDE
+ len = mbstowcs (NULL, allargs, 0) + 1;
+ if (len == (size_t) -1)
+ error (_("Error starting executable: %d"), errno);
+ cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
+ mbstowcs (cygallargs, allargs, len);
+#else
+ cygallargs = allargs;
+#endif
}
else
{
- char *newallargs;
sh = getenv ("SHELL");
if (!sh)
sh = "/bin/sh";
- cygwin_conv_to_win32_path (sh, shell);
- newallargs = alloca (sizeof (" -c 'exec '") + strlen (exec_file)
- + strlen (allargs) + 2);
- sprintf (newallargs, " -c 'exec %s %s'", exec_file, allargs);
- allargs = newallargs;
+ if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, sh, shell, __PMAX) < 0)
+ error (_("Error starting executable via shell: %d"), errno);
+#ifdef __USEWIDE
+ len = sizeof (L" -c 'exec '") + mbstowcs (NULL, exec_file, 0)
+ + mbstowcs (NULL, allargs, 0) + 2;
+ cygallargs = (wchar_t *) alloca (len * sizeof (wchar_t));
+ swprintf (cygallargs, len, L" -c 'exec %s %s'", exec_file, allargs);
+#else
+ len = (sizeof (" -c 'exec '") + strlen (exec_file)
+ + strlen (allargs) + 2);
+ cygallargs = (char *) alloca (len);
+ xsnprintf (cygallargs, len, " -c 'exec %s %s'", exec_file, allargs);
+#endif
toexec = shell;
- flags = DEBUG_PROCESS;
+ flags |= DEBUG_PROCESS;
}
- if (new_group)
- flags |= CREATE_NEW_PROCESS_GROUP;
-
- if (new_console)
- flags |= CREATE_NEW_CONSOLE;
-
- attach_flag = 0;
-
- args = alloca (strlen (toexec) + strlen (allargs) + 2);
+#ifdef __USEWIDE
+ args = (cygwin_buf_t *) alloca ((wcslen (toexec) + wcslen (cygallargs) + 2)
+ * sizeof (wchar_t));
+ wcscpy (args, toexec);
+ wcscat (args, L" ");
+ wcscat (args, cygallargs);
+#else
+ args = (cygwin_buf_t *) alloca (strlen (toexec) + strlen (cygallargs) + 2);
strcpy (args, toexec);
strcat (args, " ");
- strcat (args, allargs);
+ strcat (args, cygallargs);
+#endif
- /* Prepare the environment vars for CreateProcess. */
- {
- /* This code used to assume all env vars were file names and would
- translate them all to win32 style. That obviously doesn't work in the
- general case. The current rule is that we only translate PATH.
- We need to handle PATH because we're about to call CreateProcess and
- it uses PATH to find DLL's. Fortunately PATH has a well-defined value
- in both posix and win32 environments. cygwin.dll will change it back
- to posix style if necessary. */
-
- static const char *conv_path_names[] =
+#ifdef CW_CVT_ENV_TO_WINENV
+ /* First try to create a direct Win32 copy of the POSIX environment. */
+ w32_env = (PWCHAR) cygwin_internal (CW_CVT_ENV_TO_WINENV, in_env);
+ if (w32_env != (PWCHAR) -1)
+ flags |= CREATE_UNICODE_ENVIRONMENT;
+ else
+ /* If that fails, fall back to old method tweaking GDB's environment. */
+#endif
{
- "PATH=",
- 0
- };
-
- /* CreateProcess takes the environment list as a null terminated set of
- strings (i.e. two nulls terminate the list). */
-
- /* Get total size for env strings. */
- for (envlen = 0, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
-
- for (j = 0; conv_path_names[j]; j++)
- {
- len = strlen (conv_path_names[j]);
- if (strncmp (conv_path_names[j], env[i], len) == 0)
- {
- if (cygwin_posix_path_list_p (env[i] + len))
- envlen += len
- + cygwin_posix_to_win32_path_list_buf_size (env[i] + len);
- else
- envlen += strlen (env[i]) + 1;
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- envlen += strlen (env[i]) + 1;
- }
-
- winenv = alloca (envlen + 1);
-
- /* Copy env strings into new buffer. */
- for (temp = winenv, i = 0; env[i] && *env[i]; i++)
- {
- int j, len;
-
- for (j = 0; conv_path_names[j]; j++)
- {
- len = strlen (conv_path_names[j]);
- if (strncmp (conv_path_names[j], env[i], len) == 0)
- {
- if (cygwin_posix_path_list_p (env[i] + len))
- {
- memcpy (temp, env[i], len);
- cygwin_posix_to_win32_path_list (env[i] + len, temp + len);
- }
- else
- strcpy (temp, env[i]);
- break;
- }
- }
- if (conv_path_names[j] == NULL)
- strcpy (temp, env[i]);
-
- temp += strlen (temp) + 1;
- }
-
- /* Final nil string to terminate new env. */
- *temp = 0;
- }
+ /* Reset all Win32 environment variables to avoid leftover on next run. */
+ clear_win32_environment (environ);
+ /* Prepare the environment vars for CreateProcess. */
+ old_env = environ;
+ environ = in_env;
+ cygwin_internal (CW_SYNC_WINENV);
+ w32_env = NULL;
+ }
if (!inferior_io_terminal)
tty = ostdin = ostdout = ostderr = -1;
}
}
- win32_init_thread_list ();
+ windows_init_thread_list ();
ret = CreateProcess (0,
args, /* command line */
NULL, /* Security */
NULL, /* thread */
TRUE, /* inherit handles */
flags, /* start flags */
- winenv,
+ w32_env, /* environment */
NULL, /* current directory */
&si,
&pi);
+ if (w32_env)
+ /* Just free the Win32 environment, if it could be created. */
+ free (w32_env);
+ else
+ {
+ /* Reset all environment variables to avoid leftover on next run. */
+ clear_win32_environment (in_env);
+ /* Restore normal GDB environment variables. */
+ environ = old_env;
+ cygwin_internal (CW_SYNC_WINENV);
+ }
+
if (tty >= 0)
{
close (tty);
close (ostdout);
close (ostderr);
}
+#else
+ toexec = exec_file;
+ /* Build the command line, a space-separated list of tokens where
+ the first token is the name of the module to be executed.
+ To avoid ambiguities introduced by spaces in the module name,
+ we quote it. */
+ args_len = strlen (toexec) + 2 /* quotes */ + strlen (allargs) + 2;
+ args = alloca (args_len);
+ xsnprintf (args, args_len, "\"%s\" %s", toexec, allargs);
+
+ flags |= DEBUG_ONLY_THIS_PROCESS;
+
+ if (!inferior_io_terminal)
+ tty = INVALID_HANDLE_VALUE;
+ else
+ {
+ SECURITY_ATTRIBUTES sa;
+ sa.nLength = sizeof(sa);
+ sa.lpSecurityDescriptor = 0;
+ sa.bInheritHandle = TRUE;
+ tty = CreateFileA (inferior_io_terminal, GENERIC_READ | GENERIC_WRITE,
+ 0, &sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+ if (tty == INVALID_HANDLE_VALUE)
+ warning (_("Warning: Failed to open TTY %s, error %#x."),
+ inferior_io_terminal, (unsigned) GetLastError ());
+ else
+ {
+ si.hStdInput = tty;
+ si.hStdOutput = tty;
+ si.hStdError = tty;
+ si.dwFlags |= STARTF_USESTDHANDLES;
+ }
+ }
+
+ /* CreateProcess takes the environment list as a null terminated set of
+ strings (i.e. two nulls terminate the list). */
+
+ /* Get total size for env strings. */
+ for (envlen = 0, i = 0; in_env[i] && *in_env[i]; i++)
+ envlen += strlen (in_env[i]) + 1;
+
+ envsize = sizeof (in_env[0]) * (i + 1);
+ env = (char **) alloca (envsize);
+ memcpy (env, in_env, envsize);
+ /* Windows programs expect the environment block to be sorted. */
+ qsort (env, i, sizeof (char *), envvar_cmp);
+
+ w32env = alloca (envlen + 1);
+
+ /* Copy env strings into new buffer. */
+ for (temp = w32env, i = 0; env[i] && *env[i]; i++)
+ {
+ strcpy (temp, env[i]);
+ temp += strlen (temp) + 1;
+ }
+
+ /* Final nil string to terminate new env. */
+ *temp = 0;
+
+ windows_init_thread_list ();
+ ret = CreateProcessA (0,
+ args, /* command line */
+ NULL, /* Security */
+ NULL, /* thread */
+ TRUE, /* inherit handles */
+ flags, /* start flags */
+ w32env, /* environment */
+ NULL, /* current directory */
+ &si,
+ &pi);
+ if (tty != INVALID_HANDLE_VALUE)
+ CloseHandle (tty);
+#endif
if (!ret)
- error (_("Error creating process %s, (error %d)."),
+ error (_("Error creating process %s, (error %u)."),
exec_file, (unsigned) GetLastError ());
CloseHandle (pi.hThread);
else
saw_create = 0;
- do_initial_win32_stuff (pi.dwProcessId);
+ do_initial_windows_stuff (ops, pi.dwProcessId, 0);
- /* win32_continue (DBG_CONTINUE, -1); */
- proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);
+ /* windows_continue (DBG_CONTINUE, -1); */
}
static void
-win32_mourn_inferior (void)
+windows_mourn_inferior (struct target_ops *ops)
{
- (void) win32_continue (DBG_CONTINUE, -1);
+ (void) windows_continue (DBG_CONTINUE, -1);
i386_cleanup_dregs();
- unpush_target (&win32_ops);
+ if (open_process_used)
+ {
+ CHECK (CloseHandle (current_process_handle));
+ open_process_used = 0;
+ }
+ unpush_target (ops);
generic_mourn_inferior ();
}
/* Send a SIGINT to the process group. This acts just like the user typed a
- ^C on the controlling terminal. */
+ ^C on the controlling terminal. */
static void
-win32_stop (void)
+windows_stop (ptid_t ptid)
{
DEBUG_EVENTS (("gdb: GenerateConsoleCtrlEvent (CTRLC_EVENT, 0)\n"));
CHECK (GenerateConsoleCtrlEvent (CTRL_C_EVENT, current_event.dwProcessId));
registers_changed (); /* refresh register state */
}
-static int
-win32_xfer_memory (CORE_ADDR memaddr, gdb_byte *our, int len,
- int write, struct mem_attrib *mem,
- struct target_ops *target)
+/* Helper for windows_xfer_partial that handles memory transfers.
+ Arguments are like target_xfer_partial. */
+
+static enum target_xfer_status
+windows_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
{
- DWORD done = 0;
- if (write)
+ SIZE_T done = 0;
+ BOOL success;
+ DWORD lasterror = 0;
+
+ if (writebuf != NULL)
{
- DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) memaddr));
- if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our,
- len, &done))
- done = 0;
- FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len);
+ DEBUG_MEM (("gdb: write target memory, %s bytes at %s\n",
+ pulongest (len), core_addr_to_string (memaddr)));
+ success = WriteProcessMemory (current_process_handle,
+ (LPVOID) (uintptr_t) memaddr, writebuf,
+ len, &done);
+ if (!success)
+ lasterror = GetLastError ();
+ FlushInstructionCache (current_process_handle,
+ (LPCVOID) (uintptr_t) memaddr, len);
}
else
{
- DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n",
- len, (DWORD) memaddr));
- if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our,
- len, &done))
- done = 0;
+ DEBUG_MEM (("gdb: read target memory, %s bytes at %s\n",
+ pulongest (len), core_addr_to_string (memaddr)));
+ success = ReadProcessMemory (current_process_handle,
+ (LPCVOID) (uintptr_t) memaddr, readbuf,
+ len, &done);
+ if (!success)
+ lasterror = GetLastError ();
}
- return done;
+ *xfered_len = (ULONGEST) done;
+ if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0)
+ return TARGET_XFER_OK;
+ else
+ return success ? TARGET_XFER_OK : TARGET_XFER_E_IO;
}
static void
-win32_kill_inferior (void)
+windows_kill_inferior (struct target_ops *ops)
{
CHECK (TerminateProcess (current_process_handle, 0));
for (;;)
{
- if (!win32_continue (DBG_CONTINUE, -1))
+ if (!windows_continue (DBG_CONTINUE, -1))
break;
if (!WaitForDebugEvent (¤t_event, INFINITE))
break;
break;
}
- CHECK (CloseHandle (current_process_handle));
-
- /* this may fail in an attached process so don't check. */
- if (current_thread && current_thread->h)
- (void) CloseHandle (current_thread->h);
- target_mourn_inferior (); /* or just win32_mourn_inferior? */
-}
-
-static void
-win32_resume (ptid_t ptid, int step, enum target_signal sig)
-{
- thread_info *th;
- DWORD continue_status = DBG_CONTINUE;
-
- int pid = PIDGET (ptid);
-
- if (sig != TARGET_SIGNAL_0)
- {
- if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
- {
- DEBUG_EXCEPT(("Cannot continue with signal %d here.\n",sig));
- }
- else if (sig == last_sig)
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
- else
-#if 0
-/* This code does not seem to work, because
- the kernel does probably not consider changes in the ExceptionRecord
- structure when passing the exception to the inferior.
- Note that this seems possible in the exception handler itself. */
- {
- int i;
- for (i = 0; xlate[i].them != -1; i++)
- if (xlate[i].us == sig)
- {
- current_event.u.Exception.ExceptionRecord.ExceptionCode =
- xlate[i].them;
- continue_status = DBG_EXCEPTION_NOT_HANDLED;
- break;
- }
- if (continue_status == DBG_CONTINUE)
- {
- DEBUG_EXCEPT(("Cannot continue with signal %d.\n",sig));
- }
- }
-#endif
- DEBUG_EXCEPT(("Can only continue with recieved signal %d.\n",
- last_sig));
- }
-
- last_sig = TARGET_SIGNAL_0;
-
- DEBUG_EXEC (("gdb: win32_resume (pid=%d, step=%d, sig=%d);\n",
- pid, step, sig));
-
- /* Get context for currently selected thread */
- th = thread_rec (current_event.dwThreadId, FALSE);
- if (th)
- {
- if (step)
- {
- /* Single step by setting t bit */
- win32_fetch_inferior_registers (PS_REGNUM);
- th->context.EFlags |= FLAG_TRACE_BIT;
- }
-
- if (th->context.ContextFlags)
- {
- if (debug_registers_changed)
- {
- th->context.Dr0 = dr[0];
- th->context.Dr1 = dr[1];
- th->context.Dr2 = dr[2];
- th->context.Dr3 = dr[3];
- /* th->context.Dr6 = dr[6];
- FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr[7];
- }
- CHECK (SetThreadContext (th->h, &th->context));
- th->context.ContextFlags = 0;
- }
- }
-
- /* Allow continuing with the same signal that interrupted us.
- Otherwise complain. */
-
- win32_continue (continue_status, pid);
+ target_mourn_inferior (); /* Or just windows_mourn_inferior? */
}
static void
-win32_prepare_to_store (void)
+windows_prepare_to_store (struct target_ops *self, struct regcache *regcache)
{
- /* Do nothing, since we can store individual regs */
+ /* Do nothing, since we can store individual regs. */
}
static int
-win32_can_run (void)
+windows_can_run (void)
{
return 1;
}
static void
-win32_close (int x)
+windows_close (void)
{
- DEBUG_EVENTS (("gdb: win32_close, inferior_ptid=%d\n",
- PIDGET (inferior_ptid)));
+ DEBUG_EVENTS (("gdb: windows_close, inferior_ptid=%d\n",
+ ptid_get_pid (inferior_ptid)));
}
-/* Convert pid to printable format. */
+/* Convert pid to printable format. */
static char *
-cygwin_pid_to_str (ptid_t ptid)
+windows_pid_to_str (struct target_ops *ops, ptid_t ptid)
{
static char buf[80];
- int pid = PIDGET (ptid);
-
- if ((DWORD) pid == current_event.dwProcessId)
- sprintf (buf, "process %d", pid);
- else
- sprintf (buf, "thread %ld.0x%x", current_event.dwProcessId, pid);
- return buf;
-}
-
-typedef struct
-{
- struct target_ops *target;
- bfd_vma addr;
-} map_code_section_args;
-
-static void
-map_single_dll_code_section (bfd *abfd, asection *sect, void *obj)
-{
- int old;
- int update_coreops;
- struct section_table *new_target_sect_ptr;
- map_code_section_args *args = (map_code_section_args *) obj;
- struct target_ops *target = args->target;
- if (sect->flags & SEC_CODE)
+ if (ptid_get_tid (ptid) != 0)
{
- update_coreops = core_ops.to_sections == target->to_sections;
-
- if (target->to_sections)
- {
- old = target->to_sections_end - target->to_sections;
- target->to_sections = (struct section_table *)
- xrealloc ((char *) target->to_sections,
- (sizeof (struct section_table)) * (1 + old));
- }
- else
- {
- old = 0;
- target->to_sections = (struct section_table *)
- xmalloc ((sizeof (struct section_table)));
- }
- target->to_sections_end = target->to_sections + (1 + old);
-
- /* Update the to_sections field in the core_ops structure
- if needed. */
- if (update_coreops)
- {
- core_ops.to_sections = target->to_sections;
- core_ops.to_sections_end = target->to_sections_end;
- }
- new_target_sect_ptr = target->to_sections + old;
- new_target_sect_ptr->addr = args->addr + bfd_section_vma (abfd, sect);
- new_target_sect_ptr->endaddr = args->addr + bfd_section_vma (abfd, sect) +
- bfd_section_size (abfd, sect);;
- new_target_sect_ptr->the_bfd_section = sect;
- new_target_sect_ptr->bfd = abfd;
+ snprintf (buf, sizeof (buf), "Thread %d.0x%lx",
+ ptid_get_pid (ptid), ptid_get_tid (ptid));
+ return buf;
}
+
+ return normal_pid_to_str (ptid);
}
-static int
-dll_code_sections_add (const char *dll_name, int base_addr, struct target_ops *target)
+static enum target_xfer_status
+windows_xfer_shared_libraries (struct target_ops *ops,
+ enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
- bfd *dll_bfd;
- map_code_section_args map_args;
- asection *lowest_sect;
- char *name;
- if (dll_name == NULL || target == NULL)
- return 0;
- name = xstrdup (dll_name);
- dll_bfd = bfd_openr (name, "pei-i386");
- if (dll_bfd == NULL)
- return 0;
+ struct obstack obstack;
+ const char *buf;
+ LONGEST len_avail;
+ struct so_list *so;
- if (bfd_check_format (dll_bfd, bfd_object))
+ if (writebuf)
+ return TARGET_XFER_E_IO;
+
+ obstack_init (&obstack);
+ obstack_grow_str (&obstack, "<library-list>\n");
+ for (so = solib_start.next; so; so = so->next)
+ windows_xfer_shared_library (so->so_name, (CORE_ADDR)
+ (uintptr_t) so->lm_info->load_addr,
+ target_gdbarch (), &obstack);
+ obstack_grow_str0 (&obstack, "</library-list>\n");
+
+ buf = obstack_finish (&obstack);
+ len_avail = strlen (buf);
+ if (offset >= len_avail)
+ len= 0;
+ else
{
- lowest_sect = bfd_get_section_by_name (dll_bfd, ".text");
- if (lowest_sect == NULL)
- return 0;
- map_args.target = target;
- map_args.addr = base_addr - bfd_section_vma (dll_bfd, lowest_sect);
-
- bfd_map_over_sections (dll_bfd, &map_single_dll_code_section, (void *) (&map_args));
+ if (len > len_avail - offset)
+ len = len_avail - offset;
+ memcpy (readbuf, buf + offset, len);
}
- return 1;
+ obstack_free (&obstack, NULL);
+ *xfered_len = (ULONGEST) len;
+ return TARGET_XFER_OK;
}
-static void
-core_section_load_dll_symbols (bfd *abfd, asection *sect, void *obj)
+static enum target_xfer_status
+windows_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len)
{
- struct target_ops *target = (struct target_ops *) obj;
-
- DWORD base_addr;
-
- int dll_name_size;
- struct win32_pstatus *pstatus;
- struct so_list *so;
- char *dll_name;
- char *buf = NULL;
- char *p;
- struct objfile *objfile;
- const char *dll_basename;
-
- if (strncmp (sect->name, ".module", 7) != 0)
- return;
-
- buf = (char *) xmalloc (bfd_get_section_size (sect) + 1);
- if (!buf)
+ switch (object)
{
- printf_unfiltered ("memory allocation failed for %s\n", sect->name);
- goto out;
- }
- if (!bfd_get_section_contents (abfd, sect, buf, 0, bfd_get_section_size (sect)))
- goto out;
-
- pstatus = (struct win32_pstatus *) buf;
+ case TARGET_OBJECT_MEMORY:
+ return windows_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
- memmove (&base_addr, &(pstatus->data.module_info.base_address), sizeof (base_addr));
- dll_name_size = pstatus->data.module_info.module_name_size;
- if (offsetof (struct win32_pstatus, data.module_info.module_name) + dll_name_size > bfd_get_section_size (sect))
- goto out;
+ case TARGET_OBJECT_LIBRARIES:
+ return windows_xfer_shared_libraries (ops, object, annex, readbuf,
+ writebuf, offset, len, xfered_len);
- dll_name = pstatus->data.module_info.module_name;
-
- if (!(dll_basename = strrchr (dll_name, '/')))
- dll_basename = dll_name;
- else
- dll_basename++;
+ default:
+ if (ops->beneath != NULL)
+ return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+ readbuf, writebuf, offset, len,
+ xfered_len);
+ return TARGET_XFER_E_IO;
+ }
+}
- ALL_OBJFILES (objfile)
- {
- char *objfile_basename = strrchr (objfile->name, '/');
+/* Provide thread local base, i.e. Thread Information Block address.
+ Returns 1 if ptid is found and sets *ADDR to thread_local_base. */
- if (objfile_basename &&
- strcasecmp (dll_basename, objfile_basename + 1) == 0)
- goto out;
- }
+static int
+windows_get_tib_address (ptid_t ptid, CORE_ADDR *addr)
+{
+ thread_info *th;
- base_addr += 0x1000;
- dll_name = register_loaded_dll (dll_name, base_addr, 1);
+ th = thread_rec (ptid_get_tid (ptid), 0);
+ if (th == NULL)
+ return 0;
- if (!dll_code_sections_add (dll_name, (DWORD) base_addr, target))
- printf_unfiltered ("%s: Failed to map dll code sections.\n", dll_name);
+ if (addr != NULL)
+ *addr = th->thread_local_base;
-out:
- if (buf)
- xfree (buf);
- return;
+ return 1;
}
-static struct so_list *
-win32_current_sos (void)
+static ptid_t
+windows_get_ada_task_ptid (long lwp, long thread)
{
- struct so_list *head = solib_start.next;
- win32_clear_solib ();
- if (!head && core_bfd)
- {
- bfd_map_over_sections (core_bfd, &core_section_load_dll_symbols,
- &win32_ops);
- head = solib_start.next;
- win32_clear_solib ();
- }
- return head;
+ return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp);
}
static void
-fetch_elf_core_registers (char *core_reg_sect,
- unsigned core_reg_size,
- int which,
- CORE_ADDR reg_addr)
-{
- int r;
- if (core_reg_size < sizeof (CONTEXT))
- {
- error (_("Core file register section too small (%u bytes)."), core_reg_size);
- return;
- }
- for (r = 0; r < NUM_REGS; r++)
- regcache_raw_supply (current_regcache, r, core_reg_sect + mappings[r]);
+init_windows_ops (void)
+{
+ windows_ops.to_shortname = "child";
+ windows_ops.to_longname = "Win32 child process";
+ windows_ops.to_doc = "Win32 child process (started by the \"run\" command).";
+ windows_ops.to_open = windows_open;
+ windows_ops.to_close = windows_close;
+ windows_ops.to_attach = windows_attach;
+ windows_ops.to_attach_no_wait = 1;
+ windows_ops.to_detach = windows_detach;
+ windows_ops.to_resume = windows_resume;
+ windows_ops.to_wait = windows_wait;
+ windows_ops.to_fetch_registers = windows_fetch_inferior_registers;
+ windows_ops.to_store_registers = windows_store_inferior_registers;
+ windows_ops.to_prepare_to_store = windows_prepare_to_store;
+ windows_ops.to_xfer_partial = windows_xfer_partial;
+ windows_ops.to_files_info = windows_files_info;
+ windows_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ windows_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ windows_ops.to_terminal_init = terminal_init_inferior;
+ windows_ops.to_terminal_inferior = terminal_inferior;
+ windows_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ windows_ops.to_terminal_ours = terminal_ours;
+ windows_ops.to_terminal_save_ours = terminal_save_ours;
+ windows_ops.to_terminal_info = child_terminal_info;
+ windows_ops.to_kill = windows_kill_inferior;
+ windows_ops.to_create_inferior = windows_create_inferior;
+ windows_ops.to_mourn_inferior = windows_mourn_inferior;
+ windows_ops.to_can_run = windows_can_run;
+ windows_ops.to_thread_alive = windows_thread_alive;
+ windows_ops.to_pid_to_str = windows_pid_to_str;
+ windows_ops.to_stop = windows_stop;
+ windows_ops.to_stratum = process_stratum;
+ windows_ops.to_has_all_memory = default_child_has_all_memory;
+ windows_ops.to_has_memory = default_child_has_memory;
+ windows_ops.to_has_stack = default_child_has_stack;
+ windows_ops.to_has_registers = default_child_has_registers;
+ windows_ops.to_has_execution = default_child_has_execution;
+ windows_ops.to_pid_to_exec_file = windows_pid_to_exec_file;
+ windows_ops.to_get_ada_task_ptid = windows_get_ada_task_ptid;
+ windows_ops.to_get_tib_address = windows_get_tib_address;
+
+ i386_use_watchpoints (&windows_ops);
+
+ i386_dr_low.set_control = cygwin_set_dr7;
+ i386_dr_low.set_addr = cygwin_set_dr;
+ i386_dr_low.get_addr = cygwin_get_dr;
+ i386_dr_low.get_status = cygwin_get_dr6;
+ i386_dr_low.get_control = cygwin_get_dr7;
+
+ /* i386_dr_low.debug_register_length field is set by
+ calling i386_set_debug_register_length function
+ in processor windows specific native file. */
+
+ windows_ops.to_magic = OPS_MAGIC;
}
static void
-init_win32_ops (void)
-{
- win32_ops.to_shortname = "child";
- win32_ops.to_longname = "Win32 child process";
- win32_ops.to_doc = "Win32 child process (started by the \"run\" command).";
- win32_ops.to_open = win32_open;
- win32_ops.to_close = win32_close;
- win32_ops.to_attach = win32_attach;
- win32_ops.to_detach = win32_detach;
- win32_ops.to_resume = win32_resume;
- win32_ops.to_wait = win32_wait;
- win32_ops.to_fetch_registers = win32_fetch_inferior_registers;
- win32_ops.to_store_registers = win32_store_inferior_registers;
- win32_ops.to_prepare_to_store = win32_prepare_to_store;
- win32_ops.deprecated_xfer_memory = win32_xfer_memory;
- win32_ops.to_files_info = win32_files_info;
- win32_ops.to_insert_breakpoint = memory_insert_breakpoint;
- win32_ops.to_remove_breakpoint = memory_remove_breakpoint;
- win32_ops.to_terminal_init = terminal_init_inferior;
- win32_ops.to_terminal_inferior = terminal_inferior;
- win32_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- win32_ops.to_terminal_ours = terminal_ours;
- win32_ops.to_terminal_save_ours = terminal_save_ours;
- win32_ops.to_terminal_info = child_terminal_info;
- win32_ops.to_kill = win32_kill_inferior;
- win32_ops.to_create_inferior = win32_create_inferior;
- win32_ops.to_mourn_inferior = win32_mourn_inferior;
- win32_ops.to_can_run = win32_can_run;
- win32_ops.to_thread_alive = win32_win32_thread_alive;
- win32_ops.to_pid_to_str = cygwin_pid_to_str;
- win32_ops.to_stop = win32_stop;
- win32_ops.to_stratum = process_stratum;
- win32_ops.to_has_all_memory = 1;
- win32_ops.to_has_memory = 1;
- win32_ops.to_has_stack = 1;
- win32_ops.to_has_registers = 1;
- win32_ops.to_has_execution = 1;
- win32_ops.to_magic = OPS_MAGIC;
- win32_ops.to_pid_to_exec_file = win32_pid_to_exec_file;
-
- win32_so_ops.relocate_section_addresses = win32_relocate_section_addresses;
- win32_so_ops.free_so = win32_free_so;
- win32_so_ops.clear_solib = win32_clear_solib;
- win32_so_ops.solib_create_inferior_hook = win32_solib_create_inferior_hook;
- win32_so_ops.special_symbol_handling = win32_special_symbol_handling;
- win32_so_ops.current_sos = win32_current_sos;
- win32_so_ops.open_symbol_file_object = NULL;
- win32_so_ops.in_dynsym_resolve_code = NULL;
-
- /* FIXME: Don't do this here. *_gdbarch_init() should set so_ops. */
- current_target_so_ops = &win32_so_ops;
+set_windows_aliases (char *argv0)
+{
+ add_info_alias ("dll", "sharedlibrary", 1);
}
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_windows_nat;
+
void
-_initialize_win32_nat (void)
+_initialize_windows_nat (void)
{
struct cmd_list_element *c;
- init_win32_ops ();
+ init_windows_ops ();
+
+#ifdef __CYGWIN__
+ cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
+#endif
c = add_com ("dll-symbols", class_files, dll_symbol_command,
_("Load dll library symbols from FILE."));
add_com_alias ("sharedlibrary", "dll-symbols", class_alias, 1);
+ add_com_alias ("add-shared-symbol-files", "dll-symbols", class_alias, 1);
+
+ add_com_alias ("assf", "dll-symbols", class_alias, 1);
+
+#ifdef __CYGWIN__
add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
Set use of shell to start subprocess."), _("\
Show use of shell to start subprocess."), NULL,
NULL, /* FIXME: i18n: */
&setlist, &showlist);
+ add_setshow_boolean_cmd ("cygwin-exceptions", class_support,
+ &cygwin_exceptions, _("\
+Break when an exception is detected in the Cygwin DLL itself."), _("\
+Show whether gdb breaks on exceptions in the Cygwin DLL itself."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+#endif
+
add_setshow_boolean_cmd ("new-console", class_support, &new_console, _("\
Set creation of new console when creating child process."), _("\
Show creation of new console when creating child process."), NULL,
NULL, /* FIXME: i18n: */
&setlist, &showlist);
- add_info ("dll", info_dll_command, _("Status of loaded DLLs."));
- add_info_alias ("sharedlibrary", "dll", 1);
-
- add_prefix_cmd ("w32", class_info, info_w32_command,
- _("Print information specific to Win32 debugging."),
- &info_w32_cmdlist, "info w32 ", 0, &infolist);
+ init_w32_command_list ();
add_cmd ("selector", class_info, display_selectors,
_("Display selectors infos."),
&info_w32_cmdlist);
- add_target (&win32_ops);
+ add_target (&windows_ops);
+ deprecated_init_ui_hook = set_windows_aliases;
}
/* Hardware watchpoint support, adapted from go32-nat.c code. */
/* Pass the address ADDR to the inferior in the I'th debug register.
Here we just store the address in dr array, the registers will be
- actually set up when win32_continue is called. */
-void
+ actually set up when windows_continue is called. */
+static void
cygwin_set_dr (int i, CORE_ADDR addr)
{
if (i < 0 || i > 3)
internal_error (__FILE__, __LINE__,
_("Invalid register %d in cygwin_set_dr.\n"), i);
- dr[i] = (unsigned) addr;
+ dr[i] = addr;
debug_registers_changed = 1;
debug_registers_used = 1;
}
/* Pass the value VAL to the inferior in the DR7 debug control
register. Here we just store the address in D_REGS, the watchpoint
- will be actually set up in win32_wait. */
-void
-cygwin_set_dr7 (unsigned val)
+ will be actually set up in windows_wait. */
+static void
+cygwin_set_dr7 (unsigned long val)
{
- dr[7] = val;
+ dr[7] = (CORE_ADDR) val;
debug_registers_changed = 1;
debug_registers_used = 1;
}
+/* Get the value of debug register I from the inferior. */
+
+static CORE_ADDR
+cygwin_get_dr (int i)
+{
+ return dr[i];
+}
+
/* Get the value of the DR6 debug status register from the inferior.
Here we just return the value stored in dr[6]
by the last call to thread_rec for current_event.dwThreadId id. */
-unsigned
+static unsigned long
cygwin_get_dr6 (void)
{
- return dr[6];
+ return (unsigned long) dr[6];
}
-/* Determine if the thread referenced by "pid" is alive
- by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
- it means that the pid has died. Otherwise it is assumed to be alive. */
-static int
-win32_win32_thread_alive (ptid_t ptid)
-{
- int pid = PIDGET (ptid);
+/* Get the value of the DR7 debug status register from the inferior.
+ Here we just return the value stored in dr[7] by the last call to
+ thread_rec for current_event.dwThreadId id. */
- return WaitForSingleObject (thread_rec (pid, FALSE)->h, 0) == WAIT_OBJECT_0 ?
- FALSE : TRUE;
+static unsigned long
+cygwin_get_dr7 (void)
+{
+ return (unsigned long) dr[7];
}
-static struct core_fns win32_elf_core_fns =
+/* Determine if the thread referenced by "ptid" is alive
+ by "polling" it. If WaitForSingleObject returns WAIT_OBJECT_0
+ it means that the thread has died. Otherwise it is assumed to be alive. */
+static int
+windows_thread_alive (struct target_ops *ops, ptid_t ptid)
{
- bfd_target_elf_flavour,
- default_check_format,
- default_core_sniffer,
- fetch_elf_core_registers,
- NULL
-};
+ int tid;
-void
-_initialize_core_win32 (void)
-{
- deprecated_add_core_fns (&win32_elf_core_fns);
+ gdb_assert (ptid_get_tid (ptid) != 0);
+ tid = ptid_get_tid (ptid);
+
+ return WaitForSingleObject (thread_rec (tid, FALSE)->h, 0) == WAIT_OBJECT_0
+ ? FALSE : TRUE;
}
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_check_for_gdb_ini;
+
void
_initialize_check_for_gdb_ini (void)
{
sizeof ("/gdb.ini"));
strcpy (oldini, homedir);
p = strchr (oldini, '\0');
- if (p > oldini && p[-1] != '/')
+ if (p > oldini && !IS_DIR_SEPARATOR (p[-1]))
*p++ = '/';
strcpy (p, "gdb.ini");
if (access (oldini, 0) == 0)
{
int len = strlen (oldini);
char *newini = alloca (len + 1);
- sprintf (newini, "%.*s.gdbinit",
- (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
+
+ xsnprintf (newini, len + 1, "%.*s.gdbinit",
+ (int) (len - (sizeof ("gdb.ini") - 1)), oldini);
warning (_("obsolete '%s' found. Rename to '%s'."), oldini, newini);
}
}
}
+
+/* Define dummy functions which always return error for the rare cases where
+ these functions could not be found. */
+static BOOL WINAPI
+bad_DebugActiveProcessStop (DWORD w)
+{
+ return FALSE;
+}
+static BOOL WINAPI
+bad_DebugBreakProcess (HANDLE w)
+{
+ return FALSE;
+}
+static BOOL WINAPI
+bad_DebugSetProcessKillOnExit (BOOL w)
+{
+ return FALSE;
+}
+static BOOL WINAPI
+bad_EnumProcessModules (HANDLE w, HMODULE *x, DWORD y, LPDWORD z)
+{
+ return FALSE;
+}
+
+#ifdef __USEWIDE
+static DWORD WINAPI
+bad_GetModuleFileNameExW (HANDLE w, HMODULE x, LPWSTR y, DWORD z)
+{
+ return 0;
+}
+#else
+static DWORD WINAPI
+bad_GetModuleFileNameExA (HANDLE w, HMODULE x, LPSTR y, DWORD z)
+{
+ return 0;
+}
+#endif
+
+static BOOL WINAPI
+bad_GetModuleInformation (HANDLE w, HMODULE x, LPMODULEINFO y, DWORD z)
+{
+ return FALSE;
+}
+
+static BOOL WINAPI
+bad_OpenProcessToken (HANDLE w, DWORD x, PHANDLE y)
+{
+ return FALSE;
+}
+
+static BOOL WINAPI
+bad_GetCurrentConsoleFont (HANDLE w, BOOL bMaxWindow, CONSOLE_FONT_INFO *f)
+{
+ f->nFont = 0;
+ return 1;
+}
+static COORD WINAPI
+bad_GetConsoleFontSize (HANDLE w, DWORD nFont)
+{
+ COORD size;
+ size.X = 8;
+ size.Y = 12;
+ return size;
+}
+
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_loadable;
+
+/* Load any functions which may not be available in ancient versions
+ of Windows. */
+
+void
+_initialize_loadable (void)
+{
+ HMODULE hm = NULL;
+
+ hm = LoadLibrary ("kernel32.dll");
+ if (hm)
+ {
+ DebugActiveProcessStop = (void *)
+ GetProcAddress (hm, "DebugActiveProcessStop");
+ DebugBreakProcess = (void *)
+ GetProcAddress (hm, "DebugBreakProcess");
+ DebugSetProcessKillOnExit = (void *)
+ GetProcAddress (hm, "DebugSetProcessKillOnExit");
+ GetConsoleFontSize = (void *)
+ GetProcAddress (hm, "GetConsoleFontSize");
+ GetCurrentConsoleFont = (void *)
+ GetProcAddress (hm, "GetCurrentConsoleFont");
+ }
+
+ /* Set variables to dummy versions of these processes if the function
+ wasn't found in kernel32.dll. */
+ if (!DebugBreakProcess)
+ DebugBreakProcess = bad_DebugBreakProcess;
+ if (!DebugActiveProcessStop || !DebugSetProcessKillOnExit)
+ {
+ DebugActiveProcessStop = bad_DebugActiveProcessStop;
+ DebugSetProcessKillOnExit = bad_DebugSetProcessKillOnExit;
+ }
+ if (!GetConsoleFontSize)
+ GetConsoleFontSize = bad_GetConsoleFontSize;
+ if (!GetCurrentConsoleFont)
+ GetCurrentConsoleFont = bad_GetCurrentConsoleFont;
+
+ /* Load optional functions used for retrieving filename information
+ associated with the currently debugged process or its dlls. */
+ hm = LoadLibrary ("psapi.dll");
+ if (hm)
+ {
+ EnumProcessModules = (void *)
+ GetProcAddress (hm, "EnumProcessModules");
+ GetModuleInformation = (void *)
+ GetProcAddress (hm, "GetModuleInformation");
+ GetModuleFileNameEx = (void *)
+ GetProcAddress (hm, GetModuleFileNameEx_name);
+ }
+
+ if (!EnumProcessModules || !GetModuleInformation || !GetModuleFileNameEx)
+ {
+ /* Set variables to dummy versions of these processes if the function
+ wasn't found in psapi.dll. */
+ EnumProcessModules = bad_EnumProcessModules;
+ GetModuleInformation = bad_GetModuleInformation;
+ GetModuleFileNameEx = bad_GetModuleFileNameEx;
+ /* This will probably fail on Windows 9x/Me. Let the user know
+ that we're missing some functionality. */
+ warning(_("\
+cannot automatically find executable file or library to read symbols.\n\
+Use \"file\" or \"dll\" command to load executable/libraries directly."));
+ }
+
+ hm = LoadLibrary ("advapi32.dll");
+ if (hm)
+ {
+ OpenProcessToken = (void *) GetProcAddress (hm, "OpenProcessToken");
+ LookupPrivilegeValueA = (void *)
+ GetProcAddress (hm, "LookupPrivilegeValueA");
+ AdjustTokenPrivileges = (void *)
+ GetProcAddress (hm, "AdjustTokenPrivileges");
+ /* Only need to set one of these since if OpenProcessToken fails nothing
+ else is needed. */
+ if (!OpenProcessToken || !LookupPrivilegeValueA
+ || !AdjustTokenPrivileges)
+ OpenProcessToken = bad_OpenProcessToken;
+ }
+}
projects / deliverable / binutils-gdb.git / blobdiff